Computer Programming/Hello world

From Wikibooks, open books for an open world
< Computer Programming
Jump to: navigation, search

The following is a list of Hello, world! programs.

Hello, world! programs make the text "Hello, world!" appear on a computer screen. It is usually the first program encountered when learning a programming language. Otherwise, it's a basic sanity check for an installation of a new programming language. If "Hello World" won't run, one must not try and develop complex programs before fixing the issues with the installation.

For even more languages have a look at the Hello World Collection.

Contents

0815[edit]

<:48:x<:65:=<:6C:$=$=$$~<:03:+$<:2c:~$~<:c:x-$<:77:
~$~<:8:x-$~<:03:+$~<:06:x-$x<:0e:x-$=x<:43:x-$

4DOS batch[edit]

It should be noted that the 4DOS/4NT batch language is a superset of the MS-DOS batch language.

 @echo Hello, world!

Ingres 4GL[edit]

message "Hello, world!" with style = popup;

ABAP/4 - SAP AG[edit]

 REPORT ZHELLO.
 START-OF-SELECTION.
   WRITE 'Hello, world!'.

ABAP OBJECTS (NETWEAVER 7) - SAP AG[edit]

The example below makes use of the singleton pattern and outputs the text in a message box instead of a classic list output.

 REPORT ZHELLO.
 CLASS lcl_hello DEFINITION CREATE PRIVATE FINAL.
   PUBLIC SECTION.
     CLASS-DATA self TYPE REF TO lcl_hello READ-ONLY.
     CLASS-METHODS class_constructor.
     METHODS say_hello.
   PRIVATE SECTION.
     CONSTANTS con_hello_world TYPE c LENGTH 13 VALUE 'Hello, World!'.
 ENDCLASS.
 CLASS lcl_hello IMPLEMENTATION.
   METHOD class_constructor.
     CREATE OBJECT lcl_hello=>self.
   ENDMETHOD.
   METHOD say_hello.
     MESSAGE con_hello_world TYPE 'I'.
   ENDMETHOD.
 ENDCLASS.
 START-OF-SELECTION.
   lcl_hello=>self->say_hello( ).

ABC[edit]

WRITE "Hello, world!"

ActionScript[edit]

ActionScript 1.0 and 2.0[edit]

This will output to the output window only, which an end user would not see.

trace("Hello, world!");

This version will be visible to the end user.

var helloWorld:TextField = this.createTextField( "helloWorld", this.getNextHighestDepth(), 1, 1, 100, 20 );
helloWorld.text = "Hello, world!";

ActionScript 3[edit]

package
{
    public class HelloWorld
    {
        public function HelloWorld()
        {
            trace("Hello, world!");
        }
    }
}

Ada[edit]

with Ada.Text_IO;
 
procedure Hello is
begin
   Put_Line ("Hello, world!");
end Hello;

ALGOL 68[edit]

The ALGOL 68 standard requires that reserved-words, types and operators are in a different typeface. Hence programs are typically published in either bold or an underline typeface, e.g.:

begin
    printf($"Hello, world!"l$)
end

In the popular upper-case stropping convention for bold words:

BEGIN
    printf($"Hello, world!"l$)
END

or using a wikitext like quote stropping, this is especially suitable on computers with only 6 bits per character (hence only have UPPERCASE):

'BEGIN'
    PRINTF($"HELLO, WORLD!"L$)
'END'

or minimally using the "brief symbol" form of begin and end.

( printf($"Hello, world!"l$) )

AmigaE[edit]

PROC main()
   WriteF('Hello, world!');
ENDPROC

AMX NetLinx[edit]

This program sends the message out via the Diagnostics Interface after start-up.

program_name = 'Hello'
define_start
send_string 0,'Hello World!'

ANSI C[edit]

#include <stdio.h>
 
int main(void) {
    printf("Hello, World!\n");
 
    return 0;
}

ANSI Common Lisp[edit]

(format t "Hello, World!~%")

ANT[edit]

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE project>
<project>
	<target name="helloworld">
		<echo message="Hello, World!" />
	</target>
</project>

APL[edit]

    ∇R←HWΔPGM 
[1] R←'HELLO WORLD!'
    ∇
  • The Del on the first line begins function definition for the program named HWΔPGM. It is a niladic function (no parameters, as opposed to monadic or dyadic) and it will return an explicit result which allows other functions or APL primitives to use the returned value as input.
  • The line labeled 1 assigns the text vector 'Hello, world!!' to the variable R
  • The last line is another Del which ends the function definition.

When the function is executed by typing its name the APL interpreter assigns the text vector to the variable R, but since we have not used this value in another function, primitive, or assignment statement the interpreter returns it to the terminal, thus displaying the words on the next line below the function invocation.

The session would look like this

      HWΔPGM
Hello, world!!

While not a program, if you simply supplied the text vector to the interpreter but did not assign it to a variable it would return it to the terminal as output. Note that user input is automatically indented 6 spaces by the interpreter while results are displayed at the beginning of a new line.

      'Hello, world!'
Hello, world!!

AppleScript[edit]

return "Hello, world!"

or:

display dialog "Hello, world!"

ASP[edit]

<% Response.Write("Hello, world!") %>
or simply:
<%= "Hello, world!" %>

ASP.NET[edit]

// in the page behind using C#
protected void Page_Load(object sender, EventArgs e)
{
 Response.Write("Hello, world!");
}
' in the page behind using VB.NET
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
    Response.Write("Hello, world!")
End Sub
// ASPX Page Template
 
<asp:Literal ID="Literal1" runat="server" Text="Hello World!"></asp:Literal>

or

<asp:Label ID="Label1" runat="server" Text="Hello World"></asp:Label>

or

Hello World!

Assembly language[edit]

Accumulator-only architecture: DEC PDP-8, PAL-III assembler[edit]

See the example program in the Wikipedia PDP-8 article.

First successful uP/OS combinations: Intel 8080/Zilog Z80, CP/M, RMAC assembler[edit]

 bdos    equ    0005H    ; BDOS entry point
 start:  mvi    c,9      ; BDOS function: output string
         lxi    d,msg$   ; address of msg
         call   bdos
         ret             ; return to CCP
 
 msg$:   db    'Hello, world!$'
 end     start

Popular home computer: ZX Spectrum, Zilog Z80, HiSoft GENS assembler[edit]

 10          ORG #8000    ; Start address of the routine
 20 START    LD A,2       ; set the output channel
 30          CALL #1601   ; to channel 2 (main part of TV display)
 40          LD HL,MSG    ; Set HL register pair to address of the message
 50 LOOP     LD A,(HL)    ; De-reference HL and store in A
 60          CP 0         ; Null terminator?
 70          RET Z        ; If so, return
 80          RST #10      ; Print the character in A
 90          INC HL       ; HL points at the next char to be printed
100          JR LOOP
110 MSG      DEFM "Hello, world!"
120          DEFB 13      ; carriage return
130          DEFB 0       ; null terminator

Accumulator + index register machine: MOS Technology 6502, CBM KERNEL, MOS assembler syntax[edit]

 A_CR  = $0D              ;carriage return
 BSOUT = $FFD2            ;kernel ROM sub, write to current output device
 ;
         LDX #$00         ;starting index in .X register
 ; 
 LOOP    LDA MSG,X        ;read message text
         BEQ LOOPEND      ;end of text
 ;
         JSR BSOUT        ;output char
         INX
         BNE LOOP         ;repeat
 ;
 LOOPEND RTS              ;return from subroutine
 ;
 MSG     .BYT 'Hello, world!',A_CR,$00

Accumulator/Index microcoded machine: Data General Nova, RDOS[edit]

See the example section of the Nova article.

Expanded accumulator machine: Intel x86, DOS, TASM[edit]

MODEL   SMALL
IDEAL
STACK   100H
 
DATASEG
        MSG DB 'Hello, world!', 13, '$'
 
CODESEG
Start:
        MOV AX, @data
        MOV DS, AX
        MOV DX, OFFSET MSG
        MOV AH, 09H      ; DOS: output ASCII$ string
        INT 21H
        MOV AX, 4C00H
        INT 21H
END Start

ASSEMBLER x86 (DOS, MASM)[edit]

.MODEL Small
.STACK 100h
.DATA
   db msg 'Hello, world!$'
.CODE
start:
   mov ah, 09h
   lea dx, msg ; or mov dx, offset msg
   int 21h
   mov ax,4C00h
   int 21h
end start

ASSEMBLER x86 (DOS, FASM)[edit]

; FASM example of writing 16-bit DOS .COM program
; Compile: "FASM HELLO.ASM HELLO.COM" 
  org  $100
  use16    
  mov  ah,9
  mov  dx,xhello
  int  $21    ; DOS call: text output
  mov  ah,$4C
  int  $21    ; Return to DOS
xhello db 'Hello world !!!$'

Expanded accumulator machine: Intel x86, Microsoft Windows, FASM[edit]

Example of making 32-bit PE program as raw code and data:

format PE GUI
entry start
 
section '.code' code readable executable
 
    start:
 
        push   0
        push   _caption
        push   _message
        push   0
        call   [MessageBox]
 
        push   0
        call   [ExitProcess]
 
section '.data' data readable writeable
 
  _caption db 'Win32 assembly program',0
  _message db 'Hello, world!',0
 
section '.idata' import data readable writeable
 
  dd 0,0,0,RVA kernel_name,RVA kernel_table
  dd 0,0,0,RVA user_name,RVA user_table
  dd 0,0,0,0,0
 
  kernel_table:
    ExitProcess dd RVA _ExitProcess
    dd 0
  user_table:
    MessageBox dd RVA _MessageBoxA
    dd 0
 
  kernel_name db 'KERNEL32.DLL',0
  user_name db 'USER32.DLL',0
 
  _ExitProcess dw 0
     db 'ExitProcess',0
  _MessageBoxA dw 0
     db 'MessageBoxA',0
 
section '.reloc' fixups data readable discardable

Using FASM import macro, unicode (MessageBoxW is one of few unicode functions 'supported' by Windows 9x/ME) and section sharing, no relocation (not needed for executables), no heap - Not a beginners example but only 1024 instead of 3072 bytes:

include 'd:\dev\software\common\fasmw\win32a.inc'
 
format PE GUI 4.0
heap 0
entry start
 
section '.text' code import readable executable data
  library kernel, 'KERNEL32.DLL',\
    user,'USER32.DLL'
 
  import kernel,\
    ExitProcess, 'ExitProcess'
  import user,\
    MessageBoxW, 'MessageBoxW'
 
  start:
    xor ebx, ebx
    push ebx
    push ebx
    push _message
    push ebx
    call [MessageBoxW]
 
    push ebx
    call [ExitProcess]
 
_message du 'Hello, world!' ,0

Expanded accumulator machine: Intel x86, Linux, FASM[edit]

format ELF executable
entry _start
 
_start:
     mov eax, 4
     mov ebx, 1
     mov ecx, msg
     mov edx, msg_len
     int 80h
 
     mov ebx, 0
     mov eax, 1
     int 80h
 
     msg db 'Hello, world!', 0xA
     msg_len = $-msg

Expanded accumulator machine:Intel x86, Linux, GAS[edit]

.data
msg:
    .ascii     "Hello, world!\n"
    len = . - msg
.text
    .global _start
_start:
    movl $len,%edx
    movl $msg,%ecx
    movl $1,%ebx
    movl $4,%eax
    int $0x80
    movl $0,%ebx
    movl $1,%eax
    int $0x80

Expanded accumulator machine: Intel x86, Linux, NASM[edit]

    section .data
msg     db      'Hello, world!',0xA
len     equ     $-msg
 
    section .text
global  _start
_start:
        mov     edx,len
        mov     ecx,msg
        mov     ebx,1
        mov     eax,4
        int     0x80
 
        mov     ebx,0
        mov     eax,1
        int     0x80

Expanded accumulator machine: Intel x86, Linux, GLibC, NASM[edit]

extern printf ; Request symbol "printf".
global main   ; Declare symbol "main".
 
section .data
  str: DB "Hello World!", 0x0A, 0x00
 
section .text
main:
  PUSH str    ; Push string pointer onto stack.
  CALL printf ; Call printf.
  POP eax     ; Remove value from stack.
  MOV eax,0x0 ; \_Return value 0.
  RET         ; /

General-purpose fictional computer: MIX, MIXAL[edit]

TERM    EQU    19          console device no. (19 = typewriter)
        ORIG   1000        start address
START   OUT    MSG(TERM)   output data at address MSG
        HLT                halt execution
MSG     ALF    "HELLO"
        ALF    " WORL"
        ALF    "D    "
        END    START       end of program

General-purpose fictional computer: MMIX, MMIXAL[edit]

 string  BYTE   "Hello, world!",#a,0   string to be printed (#a is newline and 0 terminates the string)
   Main  GETA   $255,string            get the address of the string in register 255
         TRAP   0,Fputs,StdOut         put the string pointed to by register 255 to file StdOut
         TRAP   0,Halt,0               end process

General-purpose-register CISC: DEC PDP-11[edit]

RT-11, MACRO-11[edit]

        .MCALL  .REGDEF,.TTYOUT,.EXIT
        .REGDEF

HELLO:  MOV    #MSG,R1
        MOVB   (R1)+,R0
LOOP:  .TTYOUT
        MOVB   (R1)+,R0
        BNE    LOOP
       .EXIT

MSG:   .ASCIZ  /Hello, world!/
       .END    HELLO

Variant for Elektronika BK using BIOS function, MICRO-11[edit]

        MOV     #TXT,R1              ;Moving string address to R1
        CLR     R2                   ;String length=0, means null will be the termination character
        EMT     20                   ;Print the string
        HALT

TXT:    .ASCIZ  /Hello, world!/
        .END

CISC Amiga (Workbench 2.0): Motorola 68000[edit]

        include lvo/exec_lib.i
        include lvo/dos_lib.i
 
        ; open DOS library
        movea.l  4.w,a6
        lea      dosname(pc),a1
        moveq    #36,d0
        jsr      _LVOOpenLibrary(a6)
        movea.l  d0,a6
 
        ; actual print string
        lea      hellostr(pc),a0
        move.l   a0,d1
        jsr      _LVOPutStr(a6)
 
        ; close DOS library
        movea.l  a6,a1
        movea.l  4.w,a6
        jsr      _LVOCloseLibrary(a6)
        rts
 
dosname     dc.b 'dos.library',0
hellostr    dc.b 'Hello, world!',0

CISC Atari: Motorola 68000[edit]

;print
     move.l   #Hello,-(A7)
     move.w   #9,-(A7)
     trap     #1
     addq.l   #6,A7
 
;wait for key
     move.w   #1,-(A7)
     trap     #1
     addq.l   #2,A7
 
;exit
     clr.w   -(A7)
     trap    #1
 
Hello
     dc.b    'Hello, world!',0

CISC Sharp X68000 (Human68K): Motorola 68000[edit]

        pea (strign)    ; push string address onto stack
        dc.w $FF09      ; call DOS "print" by triggering an exception
        addq.l #4,a7    ; restore the stack pointer
 
        dc.w $FF00      ; call DOS "exit"
 
strign:
        dc.b "Hello, world!",13,10,0

CISC on advanced multiprocessing OS: DEC VAX, VMS, MACRO-32[edit]

        .title    hello

        .psect    data, wrt, noexe

chan:   .blkw     1
iosb:   .blkq     1
term:   .ascid    "SYS$OUTPUT"
msg:    .ascii    "Hello, world!"
len =   . - msg

        .psect    code, nowrt, exe

        .entry    hello, ^m<>

        ; Establish a channel for terminal I/O
        $assign_s devnam=term, -
                  chan=chan
        blbc      r0, end

        ; Queue the I/O request
        $qiow_s   chan=chan, -
                  func=#io$_writevblk, -
                  iosb=iosb, -
                  p1=msg, -
                  p2=#len

        ; Check the status and the IOSB status
        blbc      r0, end
        movzwl    iosb, r0

        ; Return to operating system
end:    ret

       .end       hello

Mainframe: IBM z/Architecture series using BAL[edit]

HELLO    CSECT               The name of this program is 'HELLO'
         USING *,12          Tell assembler what register we are using
         SAVE (14,12)        Save registers
         LR    12,15         Use Register 12 for this program  
         WTO   'Hello, world!' Write To Operator
         RETURN (14,12)      Return to calling party
         END  HELLO          This is the end of the program           

RISC processor: ARM, RISC OS, BBC BASIC's in-line assembler[edit]

.program         
         ADR R0, message
         SWI "OS_Write0"
         SWI "OS_Exit"
.message         
         DCS "Hello, world!"
         DCB 0
         ALIGN

or the even smaller version (from qUE);

         SWI "OS_WriteS":EQUS "Hello, world!":EQUB0:ALIGN:MOV PC,R14

RISC processor: MIPS architecture[edit]

         .data
msg:     .asciiz "Hello, world!"
         .align 2
         .text
         .globl main      
main:
         la $a0,msg
         li $v0,4
         syscall
         jr $ra

RISC processor: PowerPC, Mac OS X, GAS[edit]

.data
msg:
    .ascii "Hello, world!\n"
    len = . - msg

.text
    .globl _main

_main:
    li r0, 4 ; write
    li r3, 1 ; stdout
    addis r4, 0, ha16(msg) ; high 16 bits of address
    addi r4, r4, lo16(msg) ; low 16 bits of address
    li r5, len ; length
    sc

    li r0, 1 ; exit
    li r3, 0 ; exit status
    sc

Sigma 6/7/8/9 METASYMBOL[edit]

       SYSTEM   BPM
START  M:PRINT (MESS,HW)
       M:EXIT
HW     TEXTC    'HELLO WORLD'
       END      START

AutoHotkey[edit]

MsgBox, Hello, world!

AutoIt[edit]

MsgBox(0,'','Hello, world!')

Avenue - Scripting language for ArcView GIS[edit]

MsgBox("Hello, world!","aTitle")

AWK[edit]

BEGIN { print "Hello, world!" }

B[edit]

This is the first known Hello, world! program ever written:[1]

 main( ) {
   extrn a, b, c;
   putchar(a); putchar(b); putchar(c); putchar('!*n');
 }
 a 'hell';
 b 'o, w';
 c 'orld';

Baan Tools[edit]

Also known as Triton Tools on older versions. On Baan ERP you can create a program on 3GL or 4GL mode.

3GL Format[edit]

function main()
{
    message("Hello, world!")
}

4GL Format[edit]

choice.cont.process:
on.choice:
    message("Hello, world!")

On this last case you should press the Continue button to show the message.

Bash or sh[edit]

echo 'Hello, world!'

or

printf 'Hello, world!\n'

or using the C preprocessor

#!/bin/bash
#define cpp #
cpp $0 2> /dev/null | /bin/bash; exit $?
#undef cpp
#define HELLO_WORLD echo "hello, world"
HELLO_WORLD | tr a-z A-Z

BASIC[edit]

General[edit]

The following example works for any ANSI/ISO-compliant BASIC implementation, as well as most implementations built into or distributed with microcomputers in the 1970s and 1980s (usually some variant of Microsoft BASIC):

10 PRINT "Hello, world!"
20 END

Note that the "END" statement is optional in many implementations of BASIC.

Some implementations could also execute instructions in an immediate mode when line numbers are omitted. The following examples work without requiring a RUN instruction.

PRINT "Hello, world!"
? "Hello, world!"

Later implementations of BASIC allowed greater support for structured programming and did not require line numbers for source code. The following example works when RUN for the vast majority of modern BASICs.

PRINT "Hello, world!"
END

Again, the "END" statement is optional in many BASICs.

BlitzBasic[edit]

Print "Hello, world!"
WaitKey

DarkBASIC[edit]

PRINT "Hello, world!"

or

TEXT 0,0,"Hello, world!"
WAIT KEY

Note: In the "classic" Dark Basic the WAIT KEY command is optional as the console goes up when the program has finished.

FreeBasic[edit]

PRINT "Hello World"
SLEEP
END

or

PRINT "Hello World"

or

? "Hello World"

or

'without a newline
? "Hello World";

CoolBasic[edit]

AddText "Hello, world!"
DrawScreen
WaitKey

GW-BASIC[edit]

10 PRINT "Hello, World!"
20 END

Liberty BASIC[edit]

To write to the main window:

PRINT "Hello, world"

Or drawn in a graphics window:

nomainwin
OPEN "Hello, world!" FOR graphics AS #main
PRINT #main, "place 50 50"
PRINT #main, "\Hello, world!"
PRINT #main, "flush"
WAIT

Microsoft Small Basic[edit]

TextWindow.WriteLine("Hello, world!")

PBASIC[edit]

DEBUG "Hello, world!", CR

or, the typical microcontroller Hello, world! program equivalent with the only output device present being a light-emitting diode (LED) (in this case attached to the seventh output pin):

 DO
     HIGH 7 'Make the 7th pin go high (turn the LED on)
     PAUSE 500 'Sleep for half a second
     LOW 7 ' Make the 7th pin go low (turn the LED off)
     PAUSE 500 'Sleep for half a second
 LOOP
 END

StarOffice/OpenOffice Basic[edit]

 sub main
     print "Hello, world!"
 end sub

PureBasic[edit]

 OpenConsole()
 PrintN("Hello, world!")
 Input()

or

MessageRequester("Hello, World","Hello, World")

or

Debug "Hello, World"

TI-BASIC[edit]

On TI calculators of the TI-80 through TI-86 range:

:Disp "Hello, world!          (note the optional ending quotes)
:Output(X,Y,"Hello, world!    (note the optional ending parenthesis)
:Text(X,Y,"Hello, world!      (writes to the graph rather than home screen)
:Text(-1,X,Y,"Hello, world!   (only on the 83+ and higher, provides larger text, home screen size)
:"Hello, world!               (last line of program only)

Note: "!" character is not on the keypad. It can be accessed from "Catalog" menu, "Probability" menu, or "Math" menu (as factorial notation).

On TI-89/TI-89 Titanium/TI-92(+)/Voyage 200 calculators:

:hellowld()
:Prgm
:Disp "Hello, world!"
:EndPrgm

Visual Basic[edit]

Private Sub Form_Load()
  MsgBox "Hello, world"
End Sub

Alternatively, copy this into a New Form:

Private Sub Form_Click()
   Form1.Hide
   Dim HelloWorld As New Form1
   HelloWorld.Width = 2500: HelloWorld.Height = 1000: HelloWorld.Caption = "Hello, world!": HelloWorld.CurrentX = 500: HelloWorld.CurrentY = 75
   HelloWorld.Show: HelloWorld.Font = "Tahoma": HelloWorld.FontBold = True: HelloWorld.FontSize = 12: HelloWorld.Print "Hello, world!"
End Sub

Visual Basic .NET[edit]

Module HelloWorldApp
  Sub Main()
     System.Console.WriteLine("Hello, world!")
  End Sub
End Module

PICK/BASIC, DATA/BASIC, MV/BASIC[edit]

In addition to the ANSI syntax at the head of this article, most Pick operating system flavors of Dartmouth BASIC support extended syntax allowing cursor placement and other terminfo type functions for VDT's

X, Y positioning (colon ":" is the concatenation instruction):

 PRINT @(34,12) : "Hello, world!" 

Will display the string "Hello, world!" roughly centered in a 80X24 CRT.

Other functions:

 PRINT @(-1) : @(34,12) : "Hello, world!"

Will clear the screen before displaying the string "Hello, world!" roughly centered in a 80X24 CRT.

Syntax variants:

 CRT "Hello, world!"

Supporting the "@" functions above, the CRT statement ignores previous PRINTER statements and always sends output to the screen.

Some Pick operating system environments such as OpenQM support the DISPLAY variant of PRINT. This variant in addition to the "@" functions maintains pagination based upon the settings of the TERM variable:

 DISPLAY "Hello, world!"

Batch (MS-DOS)[edit]

@echo Hello World!

or

@echo off
set hellostring=Hello World!
echo %hellostring%

or

@echo off
echo Hello World!
pause
exit

bc[edit]

"Hello, world!"

or, with the newline

print "Hello, world!\n"

BCPL[edit]

GET "LIBHDR"

LET START () BE
$(
    WRITES ("Hello, world!*N")
$)

BITGGAL AgileDog[edit]

T 
 1 "Hello, World"
 0

BITGGAL Jihwaja[edit]

J( 1 TM 5 ZV 3 "Hello, world" )

BLISS[edit]

%TITLE 'HELLO_WORLD'
MODULE HELLO_WORLD (IDENT='V1.0', MAIN=HELLO_WORLD,
        ADDRESSING_MODE (EXTERNAL=GENERAL)) =
BEGIN

    LIBRARY 'SYS$LIBRARY:STARLET';

    EXTERNAL ROUTINE
       LIB$PUT_OUTPUT;

GLOBAL ROUTINE HELLO_WORLD =
BEGIN
    LIB$PUT_OUTPUT(%ASCID %STRING('Hello, world!'))
END;

END
ELUDOM

BlitzMax[edit]

 SuperStrict
 Graphics 640, 480, 0, 60
 
 Local running:Int = 1
 While running
 	Cls
 	DrawText "Hello World!", 1, 1
 	Flip
 
 	If GetChar()
 		running = 0
 	EndIf
 Wend
 
 End

boo[edit]

See also GUI section.

print "Hello, world!"

Burning Sand 2[edit]

WRITE ELEMENT:Earth 210 230 40 CENTER TEXT "Hello World!"

C[edit]

 #include <stdio.h>
 
 int main(void)
 {
    printf("Hello, world!\n");
    return 0;
 }

Caché Server Pages (CSP)[edit]

Class Test.Hello Extends %CSP.Page [ ProcedureBlock ]
{
   ClassMethod OnPage() As %Status
   {
       &html<<html>
       <head>
       </head>
       <body>>
       Write "Hello, world!",!
       &html<</body>
       </html>>
       Quit $$$OK
   }
}

Calprola[edit]

This program will work on the Avasmath 80 online programmable calculator.

#BTN A1
#PRI "HELLO WORLD!"
#END

C/AL - MBS Navision[edit]

OBJECT Codeunit 50000 HelloWorld
{
  PROPERTIES
  {
    OnRun=BEGIN
            MESSAGE(Txt001);
          END;
  }
  CODE
  {
    VAR
      Txt001@1000000000 : TextConst 'ENU=Hello, world!';
    BEGIN
    {
      Hello, world! in C/AL (Microsoft Business Solutions-Navision)
    }
    END.
  }
}

Casio FX-9750[edit]

This program will work on the fx-9750 graphing calculator and compatibles.

"Hello, world!"

or

Locate 1,1,"Hello, world!"

CCL[edit]

 call echo("Hello, world!")

Ch[edit]

The above C code can run in Ch as examples. The simple one in Ch is:

  printf("Hello, world!\n");

Chuck[edit]

 <<<"Hello World">>>;

Chrome[edit]

namespace HelloWorld;
 
interface
 
type
  HelloClass = class
  public
    class method Main; 
  end;
 
implementation
 
class method HelloClass.Main;
begin
  System.Console.WriteLine('Hello, world!');
end;
 
end.

CIL[edit]

.assembly Hello {}
.assembly extern mscorlib {}
.method static void Main()
{
     .entrypoint
     .maxstack 1
     ldstr "Hello, world!"
     call void [mscorlib]System.Console::WriteLine(string)
     ret
}

CintieFramework (VisualBasic.NET)[edit]

<Script>
	<References>
		<Reference>System.dll</Reference>
	</References>
	<Code Language="VisualBasic">
<![CDATA[
Public Class Plugin
	Public Function MainF(ByVal Ob As Object) As String
		'Script Code
		Return "Hello, World!"
	End Function
End Class
]]>
	</Code>
</Script>

Clean[edit]

module hello

Start = "Hello, world!"

Clipper[edit]

? "Hello, world!"

or

@1,1 say "Hello, world!"

or

Qout("Hello, world")

CLIST[edit]

PROC 0
WRITE Hello, world!

Clojure[edit]

(println "Hello, world!")

CLU[edit]

start_up = proc ()
    po: stream := stream$primary_output ()
    stream$putl (po, "Hello, world!")
    end start_up

COBOL[edit]

IDENTIFICATION DIVISION.
PROGRAM-ID.  HELLO-WORLD.
PROCEDURE DIVISION.
    DISPLAY "Hello, world!"
    STOP RUN.

The above is a very abbreviated and condensed version, which omits the author name and source and destination computer types.

CoffeeScript[edit]

CoffeeScript is a little language that compiles into JavaScript. And like JavaScript, it does not have native (built in) input or output routines. Instead it relies on the facilities provided by its host environment.

Using an alert, using a standard Web browser's window object (window.alert)

alert 'Hello, world!'

or, from Firebug, Apple Safari, or Google Chrome debug console, or Node.js console

console.log 'Hello, world!'

ColdFusion (CFML)[edit]

<cfoutput>Hello, world!</cfoutput>

or

Hello, world!

COMAL[edit]

PRINT "Hello, world!"

Common Lisp[edit]

(princ "Hello, world!")

Cube[edit]

Function | Main  
WriteLine | "Hello, world"
End | Main

The '|' refers to the separation of the two text fields in the Cube standard IDE.

C++[edit]

#include <iostream>
 
using namespace std;
 
int main(){
    cout << "Hello, World!" << endl;
    return 0;
}

C++/CLI[edit]

int main(){
   System::Console::WriteLine("Hello, world!");
   return 0;
}

C++, Managed (.NET)[edit]

#using <mscorlib.dll>
 
using namespace System;
 
int wmain()
{
    Console::WriteLine("Hello, world!");
    return 0;
}

C#[edit]

See also GUI section.

using System;
 
internal static class HelloWorld
{
    private static void Main()
    {
        Console.WriteLine("Hello, world!");
    }
}

Or just in one line:

class s{static void Main(){System.Console.WriteLine("Hello, world!");}}

D[edit]

 import std.stdio ;
 
 void main () {
     writefln("Hello, world!");
 }

Tango version:

 import tango.io.Stdout;
 
 void main() {
     Stdout ("Hello, world!").newline;
 }

DC, an arbitrary precision calculator[edit]

[Hello, world!]p

or

1468369091346906859060166438166794P

DCL batch[edit]

$ write sys$output "Hello, world!"

D++[edit]

 function main()
 {
     screenput "Hello, world!";
 }

Delphi[edit]

{$APPTYPE CONSOLE}
begin
  Writeln('Hello, world!');
end.

DIV[edit]

PROGRAM hello;
BEGIN
    write(0, 0, 0, 0, "Hello, world!");
    LOOP
        FRAME;
    END
END

DOLL[edit]

this::operator()
{
 import system.cstdio;
 puts("Hello, world!");
}

Dream Maker[edit]

mob
    Login()
        ..()
        world << "Hello, world!"

Dylan[edit]

module: hello

format-out("Hello, world!\n");

EAScripting[edit]

set disp to "Hello, world!"
set dispto to item unit 5 //5 = default screen
release disp into dispto.

This would be a pure system call

import system ea.helloworld
wait

Ed and Ex (Ed extended)[edit]

a
Hello, world!!
.
p

Eiffel[edit]

class HELLO_WORLD
 
create make
feature
    make is
    do
        io.put_string("Hello, world!%N")
    end -- make
end -- class HELLO_WORLD

Erlang[edit]

See also GUI section.

-module(hello).
 
-export([hello/0]).
 
hello() -> io:format("Hello, world!~n").

Euphoria[edit]

puts(1, "Hello, world!")

Factor[edit]

"Hello, world!" print

or gui version

"Hello, world!" <label> "Hi" open-window

Falcon[edit]

printl( "Hello world" )

Ferite[edit]

uses "console";

Console.println("Hello, world!");

filePro[edit]

 @once:
   mesgbox "Hello, world!" ; exit

Fjölnir[edit]

"halló" < main
{
   main ->
   stef(;)
   stofn
       skrifastreng(;"Halló, veröld!"),
   stofnlok
}
*
"GRUNNUR"
;

FOCAL[edit]

type "Hello, world!",!

or

t "Hello, world!",!

Focus[edit]

-TYPE Hello, world!

Forte TOOL[edit]

begin TOOL HelloWorld;

includes Framework;
HAS PROPERTY IsLibrary = FALSE;

forward  Hello;

-- START CLASS DEFINITIONS

class Hello inherits from Framework.Object

has public  method Init;

has property
    shared=(allow=off, override=on);
    transactional=(allow=off, override=on);
    monitored=(allow=off, override=on);
    distributed=(allow=off, override=on);

end class;
-- END CLASS DEFINITIONS

-- START METHOD DEFINITIONS

------------------------------------------------------------
method Hello.Init
begin
super.Init();

task.Part.LogMgr.PutLine('Hello, world!');
end method;
-- END METHOD DEFINITIONS
HAS PROPERTY
    CompatibilityLevel = 0;
    ProjectType = APPLICATION;
    Restricted = FALSE;
    MultiThreaded = TRUE;
    Internal = FALSE;
    LibraryName = 'hellowor';
    StartingMethod = (class = Hello, method = Init);

end HelloWorld;

Forth[edit]

: HELLO  ( -- )  ." Hello, world!" CR ;
  HELLO

or instead of compiling a new routine, one can type directly in the Forth interpreter console

 CR ." Hello, world!" CR

Fortran[edit]

Fortran 77[edit]

00    program hello
      write(*,*) 'Hello World!'
      stop
      end

Fortran 90/95[edit]

program hello
    write(*,*) 'Hello, World!'
end program hello

F#[edit]

printfn "Hello, world!"

Fril[edit]

?((pp "Hello, world!"))     

or

pp "Hello, world!"

Frink[edit]

println["Hello, world!"]

Gambas[edit]

See also GUI section.

 PUBLIC SUB Main()
   Print "Hello, world!"
 END

GEMBase 4GL[edit]

procedure_form hello
  begin_block world
      print "Hello, world!"
  end_block
end_form

GML (Game Maker Language)[edit]

In the draw event of some object:

 draw_text(x,y,"Hello, world!")

Or to show a splash screen message:

 show_message("Hello, world!")

Go (from Google)[edit]

package main
 
import "fmt"
 
func main() {
  fmt.Printf("Hello, world!")
}

GraalScript[edit]

GraalScript 1[edit]

 if (created) {
   echo Hello, world!;
 }

GraalScript 2[edit]

 function onCreated() {
   echo("Hello, world!");
 }

Groovy[edit]

println "Hello, world!"

Harbour[edit]

? "Hello, world!"

or

@1,1 say "Hello, world!"

or

Qout("Hello, world")

Haskell[edit]

main = putStrLn "Hello, world!"

Haxe[edit]

class HelloWorldApp
{
    static function main()
    {
        trace("Hello, world!");
    }
}

Heron[edit]

program HelloWorld;
functions {
  _main() {
    print_string("Hello, world!");
  }
}
end

HP 33s[edit]

(Handheld Hewlett-Packard RPN-based scientific calculator.)

LBL H
SF 10
EQN
RCL H
RCL E
RCL L
RCL L
RCL O
R/S
RCL W
RCL O
RCL R
RCL L
RDL D
ENTER
R/S

HP-41 & HP-42S[edit]

(Handheld Hewlett-Packard RPN-based alphanumeric engineering calculators.)

01 LBLTHELLO

02 THello, world!

03 PROMPT

HyperTalk (Apple HyperCard's scripting programming language)[edit]

put "Hello, world!"

or

Answer "Hello, world!"

Icon[edit]

procedure main()
    write("Hello, world!")
end

IDL[edit]

print,"Hello, world!"

Io[edit]

"Hello, world!" println

or

writeln("Hello, world!")

Inform[edit]

Inform 5/6[edit]

[ Main;
  "Hello, world!";
];

Inform 7[edit]

Hello World is a room.  The printed name is "Hello, world!"

Iptscrae[edit]

ON ENTER {
    "Hello, " "world!" & SAY
}

J[edit]

'Hello, world!' NB. echoes the string in interactive mode, doesn't work in script
'Hello World!' 1!:2(2) NB. prints it to (2) - screen, (4) - stdout

Jal[edit]

include 16f877_20
include hd447804
 
hd44780_clear
 
hd44780 = "H"
hd44780 = "e"
hd44780 = "l"
hd44780 = "l"
hd44780 = "o"
hd44780 = " "
hd44780 = "W"
hd44780 = "o"
hd44780 = "r"
hd44780 = "l"
hd44780 = "d"
hd44780 = "!"

Java[edit]

See also GUI section.

public class HelloWorld {
     public static void main(String[] args) {
          System.out.println("Hello, world!");
     }
}

Java byte-code[edit]

(disassembler output of javap -c HelloWorld)

public class HelloWorld extends java.lang.Object{
public HelloWorld();
 Code:
  0:   aload_0
  1:   invokespecial   #1; //Method java/lang/Object."<init>":()V
  4:   return
public static void main(java.lang.String[]);
 Code:
  0:   getstatic       #2; //Field java/lang/System.out:Ljava/io/PrintStream;
  3:   ldc     #3; //String Hello, world!
  5:   invokevirtual   #4; //Method java/io/PrintStream.println:(Ljava/lang/String;)V
  8:   return
}

JavaFX Script[edit]

JavaFX Script was a scripting language formerly called F3 for Form Follows Function. It was discontinued by Oracle in 2010.

 Frame {
    title: "Hello World JavaFX"
    width: 200
    content: Label {
       text: "Hello World"
    }
    visible: true
 }

This program can also be written in this way:

 var win = new Frame();
 win.title = "Hello World JavaFX";
 win.width = 200;
 var label = new Label();
 label.text = "Hello World";
 win.content = label;
 win.visible = true;

A simple console output version would be:

 import java.lang.System;
 System.out.println("Hello World");

Or even simpler (with a built-in function):

println("Hello World");

JavaScript[edit]

JavaScript does not have native (built in) input or output routines. Instead it relies on the facilities provided by its host environment.

Using a standard Web browser's document object

document.write('Hello, World!');

or with an alert, using a standard Web browser's window object (window.alert)

alert('Hello, world!');

or, from the Mozilla command line implementation

print('Hello, world!');

or, from the Windows Script Host

WScript.Echo('Hello, world!');

or, from Firebug, Apple Safari, or Google Chrome debug console

console.log('Hello, world!');

JCL (mainframe Job Control Language)[edit]

Joy[edit]

"Hello, world!\n" putchars .

JSP[edit]

 <%@ page contentType="text/html;charset=WINDOWS-1252"%>
 <HTML>
    <BODY>
         <% out.println(" Hello, world!"); %>
    </BODY>
 </HTML>

or just

 <% out.println("Hello, world!"); %> 

or literally

 Hello, world!

Julia[edit]

println("Hello, world!")

K[edit]

`0:"Hello, world!\n"

Kogut[edit]

WriteLine "Hello, world!"

KPL (Kids Programming Language)[edit]

Program HelloWorld
   Method Main()
      ShowConsole()
      ConsoleWriteLine("Hello, world!")
   End Method
End Program

Lasso[edit]

Output: 'Hello, world!';

or

Output('Hello, world!');

or simply

'Hello, world!';

Lexico Mobile (in spanish)[edit]

tarea muestre "Hola mundo !"

or

clase Saludo derivada_de Form
publicos
mensajes
Saludo copie "Hola mundo !" en saludo.Text

Linden Scripting Language[edit]

Linden Scripting Language is the scripting language used within Second Life

default
{
    state_entry()
    {
        llSetText("Hello, World!" , <0,0,0> , 1.0);
        //or...
        llSay(0,"Hello, World!");
    }
}

Linotte[edit]

Livre : HelloWorld
 Paragraphe : Affichage
 Actions :
   "Hello, World !" !

Lisaac[edit]

Section Header
  + name := HELLO_WORLD_PROGRAM;
 
Section Public
  - main <-
  (
    "Hello world!\n".print;
  );

Lisp[edit]

Lisp has many dialects that have appeared over its almost fifty-year history.

Common Lisp[edit]

(format t "Hello, world!~%")

or

(write-line "Hello, world!")

or in the REPL:

"Hello, world!"

(As a string (enclosed in quotes) it evaluates to itself, so is printed.)

Scheme[edit]

(display "Hello, world!\n")

Clojure[edit]

(println "Hello, world!")

Emacs Lisp[edit]

(print "Hello, world!")

or:

(message "Hello, world!")

AutoLisp[edit]

(print "Hello, world!")

XLISP[edit]

(print "Hello, world!")

Arc[edit]

(prn "Hello, world!")

Pils[edit]

(out "Hello, world!")

[edit]

print [Hello, world!]

or

pr [Hello, world!]

In mswlogo only

messagebox [Hi] [Hello, world!]

LPC[edit]

  void create()
  {
      write("Hello, world!\n");
  }

Lua[edit]

io.write("Hello, world!\n")

or

return "Hello, World!"

or

print("Hello, world")

LuaDEV (PSP and Wii)[edit]

 screen.print(10,10,"Hello, world!")

M (MUMPS)[edit]

W "Hello, world!"

Macsyma, Maxima[edit]

print("Hello, world!")$

Maple[edit]

print("Hello, world!");

Mathematica[edit]

Print["Hello, world!"]

or simply:

"Hello, world!"

MATLAB[edit]

disp('Hello, world!')

or

fprintf('Hello, world!')

or with a GUI

 figure('Position',[100 100 200 200],'MenuBar','none','Name','Hello World');
 uicontrol('Style','text','Position',[15 100 150 15],'String','Hello world');

or

msgbox('Hello World!')

Maude[edit]

fmod HELLOWORLD is
protecting STRING .
  op helloworld : -> String .
  eq helloworld = "Hello, world!" .
endfm
red helloworld .

Max[edit]

max v2;
#N vpatcher 10 59 610 459;
#P message 33 93 63 196617 Hello, world!!;
#P newex 33 73 45 196617 loadbang;
#P newex 33 111 31 196617 print;
#P connect 1 0 2 0;
#P connect 2 0 0 0;
#P pop;

Maya Embedded Language[edit]

print( "Hello, world!\n" );

Mesham[edit]

var x:String::allocated[on[0]];
x:="Hello World";  // allocated on process 0 only
proc 1 {
   // This is displayed by process 1, auto communication done to achieve this
   print[x];
}

M4[edit]

Hello, world!

mIRC Script[edit]

aliases[edit]

helloworld echo Hello, world!

remote[edit]

alias helloworld echo Hello, world!

popups[edit]

Hello World:echo Hello, world!

command line[edit]

echo Hello, world!

or

echo Hello, world!

Model 204[edit]

BEGIN
PRINT 'Hello, world!'
END

Modula-2[edit]

MODULE Hello;
 
FROM InOut IMPORT WriteLn, WriteString;
 
BEGIN
   WriteString ("Hello, world!");
   WriteLn
END Hello.

Monkey[edit]

Strict

Function Main:Int()
 Print "Hello World!"
 
 Return 0
End

MOO[edit]

This requires that you be the player or a wizard:

notify(player, "Hello, world!");

This is specific to the implementation of the core used for the moo, but works on most well known moos, such as LambdaCore or JH-Core:

player:tell("Hello, world!");

Mouse[edit]

"Hello, World!"
$

MPI[edit]

#include <stdio.h>
#include <time.h>
#include <string.h>
#include "mpi.h"

int main ( int argc, char * argv[] )
{
    const int   maximum_message_length = 100;
    const int   master_rank            =   0;
    char        message[maximum_message_length+1];
    MPI_Status  status;      /* Info about receive status  */
    int         my_rank;     /* This process ID            */
    int         num_procs;   /* Number of processes in run */
    int         source;      /* Process ID to receive from */
    int         destination; /* Process ID to send to      */
    int         tag = 0;     /* Message ID                 */
    int         mpi_error;   /* Error code for MPI calls   */
    int         icount;
    char        processor_name[MPI_MAX_PROCESSOR_NAME];
    int         name_length;

    // Initialize the MPI execution environment.

    mpi_error = MPI_Init ( &argc, &argv );
    if ( mpi_error != MPI_SUCCESS )
    {
        fprintf ( stderr, "Error: %s: Unable to initialize MPI execution environment\nAborting ...\n", argv[0] );
        return ( 1 );
    }

    // Even though we capture the error value from the MPI calls, we will
    // not deal with any error except the last one.

    mpi_error = MPI_Comm_rank ( MPI_COMM_WORLD, &my_rank );
    mpi_error = MPI_Comm_size ( MPI_COMM_WORLD, &num_procs );
    if ( my_rank != master_rank )
    {
        mpi_error = MPI_Get_processor_name (processor_name, &name_length );
        sprintf ( message, "Greetings from process #%d running on %s\n", \
                  my_rank, processor_name );
        destination = master_rank;
        mpi_error = MPI_Send ( message, strlen(message) + 1, MPI_CHAR,  \
                        destination, tag, MPI_COMM_WORLD );
    }
    else
    {
        for ( source = 0; source < num_procs; source++ )
        {
            if ( source != master_rank )
            {
                mpi_error = MPI_Recv ( message, maximum_message_length + 1, \
                        MPI_CHAR, source, tag, MPI_COMM_WORLD, &status );
                printf ( "%s  \n", message );
            }
        }
    }

    mpi_error = MPI_Finalize();
    if ( MPI_SUCCESS != mpi_error )
        return ( mpi_error );
    else
        return ( 0 );
}

M# Fictional Computer Language[edit]

Script[edit]

main(std:string >>arg<< / OS.GetArg)
{
     std:stream >>CONSOLE<< / OS.Console;

     CONSOLE:Write([byte]{0048, 0065, 006C, 006C, 006F, 002C, 0058, 006F, 0072, 006C, 0064});
     //                    H     e     l     l     o     ,     W     o     r     l     d   //
}

Command WI[edit]

# # DEFINE g >>CONSOLE<< / OS.Console
# % proc CONSOLE:Write([byte]{0048, 0065, 006C, 006C, 006F, 002C, 0058, 006F, 0072, 006C, 0064})

Command WoI[edit]

# @ Write([byte]{0048, 0065, 006C, 006C, 006F, 002C, 0058, 006F, 0072, 006C, 0064})

MS-DOS batch[edit]

(with the standard command.com interpreter. The @ symbol is optional and prevents the system from repeating the command before executing it. The @ symbol must be omitted on versions of MS-DOS prior to 3.0.). It's very common for batchfiles to start with two lines of "@echo off" and "cls".

 @echo Hello, world!

For MS-DOS 3.0 or lower

echo off
cls
echo Hello, world!

MUF[edit]

: main
  me @ "Hello, world!" notify
;

Natural[edit]

WRITE 'Hello, world!'
END

or

WRITE 'Hello, world!'.

Neko[edit]

$print("Hello, world!!\n");

Nemerle[edit]

The easiest way to get Nemerle print "Hello, world!" would be that:

System.Console.WriteLine("Hello, world!");

however, in bigger applications the following code would be probably more useful:

using System.Console;

module HelloWorld
{
   Main():void
   {
      WriteLine("Hello, world!");
   }
}

Oberon[edit]

Oberon is both the name of a programming language and an operating system.

Program written for the Oberon operating system:

MODULE Hello;
        IMPORT Oberon, Texts;
 VAR W: Texts.Writer;
 
 PROCEDURE World*;
 BEGIN
   Texts.WriteString(W, "Hello, world!");
   Texts.WriteLn(W);
   Texts.Append(Oberon.Log, W.buf)
 END World;
 
BEGIN
 Texts.OpenWriter(W)
END Hello.

Freestanding Oberon program using the standard Oakwood library:

MODULE Hello;
   IMPORT Out;
BEGIN
   Out.String("Hello, world!");
   Out.Ln
END Hello.

Obix[edit]

system.console.write_line ( "Hello, world!" )

Objective C[edit]

Procedural C Version[edit]

#import <stdio.h>
 
int main (int argc, const char *argv[])
{
    printf ("Hello, world!\n");
    return 0;
}

Object-Oriented C Version[edit]

#import <stdio.h>
#import <objc/Object.h> 
 
@interface Hello : Object
{
}
- hello;
@end 
 
@implementation Hello
- hello
{
   printf("Hello, world!\n");
}
@end 
 
int main(void)
{
   id obj;
   obj = [Hello new];
   [obj hello];
   [obj free];
   return 0;
}

OPENSTEP/Cocoa Version[edit]

#import <Foundation/Foundation.h>
 
int main (int argc, const char * argv[])
{
   NSLog(@"Hello, world!");
   return 0;
}

OCaml[edit]

print_endline "Hello, world!" ;;

occam[edit]

#USE "course.lib"

PROC hello.world(CHAN OF BYTE screen!)
  out.string("Hello, world!*n", 0, screen!)
:

or without using course.lib

PROC hello.world(CHAN OF BYTE screen!)
  SEQ
    screen ! 'H'
    screen ! 'e'
    screen ! 'l'
    screen ! 'l'
    screen ! 'o'
    screen ! ','
    screen ! ' '
    screen ! 'w'
    screen ! 'o'
    screen ! 'r'
    screen ! 'l'
    screen ! 'd'
    screen ! '!'
    screen ! '*n'
:

OpenScript[edit]

-- in a popup window
request "Hello world"

OPL[edit]

See also GUI section.

PROC hello:
  PRINT "Hello, world!"
ENDP

OPS5[edit]

(object-class request
         ^action)

(startup
   (strategy MEA)
   (make request ^action hello)
)

(rule hello
   (request ^action hello)
   (write |Hello, world!| (crlf))
)

OPS83[edit]

module hello (main)
{  procedure main( )
   {
      write() |Hello, world!|, '\n';
   };
};

Oz[edit]

{Browse 'Hello, world!'}

Parrot assembly language[edit]

print "Hello, world!\n"
end

Parrot intermediate representation[edit]

.sub hello :main
  print "Hello, world!!\n"
.end

Pascal[edit]

program helloworld;
begin
   writeln('Hello, world!')
end.

PAWN[edit]

main() {
    print("Hello, World!");
}

or

main() {
    new string[14];
    format string(sizeof(string), "Hello, World!);
    print(string);
}

Perl[edit]

As PL file[edit]

 print "Hello, world!\n";

(the semicolon is optional)

or

 package Hello;
 sub new() { bless {} }
 sub Hello() { print "Hello, world! \n" }
 package main;
 my $hello = Hello->new();
 $hello->Hello();

As CGI file[edit]

#!/usr/local/bin/perl
print "Content-type: text/html\n\n";
print "<H1>Hello World!</H1>";

Perl 6[edit]

"Hello, world!".say

or

say "Hello, world!";

or

print "Hello, world!\n";

PHP[edit]

<?php
    echo 'Hello, world!';
?>

or use short-hand echoing, syntaxed as such:

<? echo "Hello, world!"?>

this will also work:

<?= "Hello, world!" ?>

Pike[edit]

 int main() {
     write("Hello, world!\n");
     return 0;
 }

PILOT[edit]

T:Hello, world!

PL/SQL[edit]

SET serveroutput ON size 1000000;  -- this is a SQL*Plus command to enable the output buffer
BEGIN
    DBMS_OUTPUT.put_line('Hello, world!'); 
END;

PL/I[edit]

Test: proc options(main);
  put list('Hello, world!');
end Test;

PostScript[edit]

See also page description language section.

(Hello, world!\n) print

Processing[edit]

println("Hello, world!");

Progress 4GL[edit]

 DISPLAY "Hello, world!".

Prolog[edit]

:- write('Hello, world!'),nl.

Pure Data[edit]

#N canvas 0 0 300 300 10;
#X obj 100 100 loadbang;
#X msg 100 150 Hello, world!;
#X obj 100 200 print;
#X connect 0 0 1 0;
#X connect 1 0 2 0;

Python[edit]

'Hello, World!' (with quotation marks) can be attained through:

'Hello, world!'

Two easter eggs (Python 2.0):

import __hello__
 
import __phello__

Prior to Python 3.0:

print "Hello, world!"

Python 3.0 or later:

print("Hello, world!")

or any Python version

import sys
sys.stdout.write("Hello, world!\n")

R[edit]

print('Hello, world!')

Rebol[edit]

See also GUI section.

 print "Hello, world!"

Redcode[edit]

 ; Should work with any MARS >= ICWS-86
 ; with 128x64 gfx core
 Start MOV 0,2455
       MOV 0,2458
       MOV 0,2459
       MOV 0,2459
       MOV 0,2459
       MOV 0,2459
       MOV 0,2459
       MOV 0,2460
       MOV 0,2465
       MOV 0,2471
       MOV 0,2471
       MOV 0,2471
       MOV 0,2479
       MOV 0,2482
       MOV 0,2484
       MOV 0,2484
       MOV 0,2484
       MOV 0,2486
       MOV 0,2486
       MOV 0,2486
       MOV 0,2486
       MOV 0,2488
       MOV 0,2493
       MOV 0,2493
       MOV 0,2493
       MOV 0,2493
       MOV 0,2497
       MOV 0,2556
       MOV 0,2559
       MOV 0,2560
       MOV 0,2565
       MOV 0,2570
       MOV 0,2575
       MOV 0,2578
       MOV 0,2585
       MOV 0,2588
       MOV 0,2589
       MOV 0,2592
       MOV 0,2593
       MOV 0,2596
       MOV 0,2597
       MOV 0,2603
       MOV 0,2605
       MOV 0,2608
       MOV 0,2667
       MOV 0,2670
       MOV 0,2671
       MOV 0,2676
       MOV 0,2681
       MOV 0,2686
       MOV 0,2689
       MOV 0,2696
       MOV 0,2699
       MOV 0,2700
       MOV 0,2703
       MOV 0,2704
       MOV 0,2707
       MOV 0,2708
       MOV 0,2714
       MOV 0,2716
       MOV 0,2719
       MOV 0,2778
       MOV 0,2778
       MOV 0,2778
       MOV 0,2778
       MOV 0,2778
       MOV 0,2779
       MOV 0,2779
       MOV 0,2779
       MOV 0,2782
       MOV 0,2787
       MOV 0,2792
       MOV 0,2795
       MOV 0,2802
       MOV 0,2805
       MOV 0,2806
       MOV 0,2809
       MOV 0,2810
       MOV 0,2810
       MOV 0,2810
       MOV 0,2810
       MOV 0,2812
       MOV 0,2818
       MOV 0,2820
       MOV 0,2823
       MOV 0,2882
       MOV 0,2885
       MOV 0,2886
       MOV 0,2891
       MOV 0,2896
       MOV 0,2901
       MOV 0,2904
       MOV 0,2911
       MOV 0,2912
       MOV 0,2913
       MOV 0,2914
       MOV 0,2917
       MOV 0,2918
       MOV 0,2919
       MOV 0,2922
       MOV 0,2928
       MOV 0,2930
       MOV 0,2933
       MOV 0,2992
       MOV 0,2995
       MOV 0,2996
       MOV 0,3001
       MOV 0,3006
       MOV 0,3011
       MOV 0,3014
       MOV 0,3021
       MOV 0,3022
       MOV 0,3023
       MOV 0,3024
       MOV 0,3027
       MOV 0,3028
       MOV 0,3030
       MOV 0,3032
       MOV 0,3038
       MOV 0,3040
       MOV 0,3103
       MOV 0,3106
       MOV 0,3107
       MOV 0,3107
       MOV 0,3107
       MOV 0,3107
       MOV 0,3107
       MOV 0,3108
       MOV 0,3108
       MOV 0,3108
       MOV 0,3108
       MOV 0,3108
       MOV 0,3109
       MOV 0,3109
       MOV 0,3109
       MOV 0,3109
       MOV 0,3109
       MOV 0,3111
       MOV 0,3111
       MOV 0,3111
       MOV 0,3120
       MOV 0,3121
       MOV 0,3124
       MOV 0,3124
       MOV 0,3124
       MOV 0,3126
       MOV 0,3129
       MOV 0,3130
       MOV 0,3130
       MOV 0,3130
       MOV 0,3130
       MOV 0,3130
       MOV 0,3131
       MOV 0,3131
       MOV 0,3131
       MOV 0,3131
       MOV 0,3135
       JMP 0

REFAL[edit]

$ENTRY GO{=<Prout 'Hello, world!'>;}

Revolution[edit]

(This works the same for Transcript or xTalk)

Printed in the message box[edit]

put "Hello, World!" 

Shown within a dialog box[edit]

answer "Hello, world!" 

Printed on the main window interface[edit]

create field "myField"
set the text of field "myField" to "Hello, world!"  

As CGI file[edit]

#!revolution 

on startup 
  put "Content-Type: text/plain" & cr & cr 
  put "Hello World!" 
end startup 

REXX, ARexx, NetRexx, and Object REXX[edit]

 /* a starting comment is needed in mainframe versions */
 say "Hello, world!"

RPG[edit]

Free-Form Syntax[edit]

/FREE

    DSPLY 'Hello, world!';

    *InLR = *On;

/END-FREE 

Traditional Syntax[edit]

With this syntax, a constant has to be used because the message must be placed in positions 12 to 25, between apostrophes.

     d TestMessage     c                   Const( 'Hello, world!' )

     c     TestMessage   DSPLY

     c                   EVAL      *InLR = *On

RPG Code[edit]

Message Window[edit]

Using the internal message window, a simple Hello, world! program can be rendered thus:

mwin("Hello, world!")
wait()

On Screen Text[edit]

An additional way to render text is by using the built in text() function.

text(1,1,"Hello, world!")
wait()

RPL[edit]

See also GUI section.

(On Hewlett-Packard HP-28, HP-48 and HP-49 series graphing calculators.)

<<
  CLLCD
  "Hello, world!" 1 DISP
  0 WAIT
  DROP
>>

RT Assembler[edit]

_name   Hello~World!
pause   Hello~World!
exit
_end

Ruby[edit]

See also GUI section.

 puts 'Hello, world!'

or

 'Hello, world!'.each { |s| print s }

or

 class String
     def say
         puts self
     end
 end
 'Hello, world!'.say

Rust[edit]

fn main() {
    println("Hello, world!");
}

S (and R)[edit]

print("Hello, world")

or

message("Hello, world")

S-Lang[edit]

message("Hello, world!");

SAS[edit]

data _null_;
put 'Hello, world!';
run;

Sather[edit]

class HELLO_WORLD is
  main is 
   #OUT+"Hello, world!\n"; 
  end; 
end;

Scala[edit]

object HelloWorld extends App {
  println("Hello, world!")
}

App was introduced since Scala 2.1, and Application was deprecated since Scala 2.9.0. Use Application instead of App for versions below 2.1.

SCAR[edit]

program HelloWorld;
begin
 WriteLn('Hello world!');
end.

Scheme[edit]

(display "Hello, World!\n")

Scratch[edit]

sed[edit]

(note: requires at least one line of input)

 sed -ne '1s/.*/Hello, world!/p'

Seed7[edit]

$ include "seed7_05.s7i";

const proc: main is func
  begin
    writeln("Hello, world");
  end func;

Self[edit]

'Hello, world!' print.

sense script[edit]

out('Hello, world!');

ShadowScript[edit]

'set up initial variables
struct.follow
 {
  cpu.fan.speed(500.rpm)
  cpu.max.process(100)
 }
<
 logic.handle(0)
 int main()
 int var()
 array.max(100000000)
>
'open and write the text in a free handle window
open mainwin(io<std>) as free(1)
 {
  write.free(1).("Hello",&sym," world",&sym)(&sym<",">&sym<"!">
  apply.free(1) to text
 }
'reset the fan, cpu, and vars
<
 logic(std)
 fan(std.auto)
 cpu.max(auto)
 unint main()
 unint var()
 un.array.max(std)
>
'end
end
.end/

Simula[edit]

BEGIN
    OutText("Hello, world!");
    OutImage;
END

Smalltalk[edit]

Transcript show: 'Hello, world!'

alternative:

StdoutStream nextPutLine: 'Hello, world'

SML[edit]

print "Hello, world!\n";

SNOBOL[edit]

    OUTPUT = "Hello, world!"
END

Span[edit]

class Hello {
  static public main: args {
    Console << "Hello, world!\n";
  }
}

SPARK[edit]

with Spark_IO;
--# inherit Spark_IO;
--# main_program;
 
procedure Hello_World
--# global in out Spark_IO.Outputs;
--# derives Spark_IO.Outputs from Spark_IO.Outputs;
is
begin
  Spark_IO.Put_Line (Spark_IO.Standard_Output, "Hello, world!", 0);
end Hello_World;

Spin[edit]

Spin is the high level language from Parallax Inc. used to program their Propeller multi-core micro-controllers.

The program assumes that the software UART object, provided with the Propeller IDE, is used to deliver the message over a serial line.

CON
    _clkmode = xtal1 + pll16x
    _xinfreq = 5_000_000
OBJ
    console : "FullDuplexSerial"
PUB start
    console.start(31, 30, 0, 115_200)
    console.str(string("Hello, world!", 13))

SPITBOL[edit]

    OUTPUT = "Hello, world!"
END

SPSS Syntax[edit]

ECHO "Hello, world!".

SSPL[edit]

1.0
print Hello, World!
end

Standard ML[edit]

print "Hello, world!\n";

SQL[edit]

 CREATE TABLE message (text CHAR(15));
 INSERT INTO message (text) VALUES ('Hello, world!');
 SELECT text FROM message;
 DROP TABLE message;

or (for EnterpriseDB's Stored Procedure Language (SPL))

 BEGIN
     DBMS_OUTPUT.PUT_LINE('Hello, world!');
 END;

or (e.g. Oracle dialect)

SELECT 'Hello, world!' FROM dual;

or (for Oracle's PL/SQL proprietary procedural language)

 BEGIN
   DBMS_OUTPUT.ENABLE(1000000);
   DBMS_OUTPUT.PUT_LINE('Hello, world!');
 END;

or (e.g. MySQL or PostgreSQL dialect)

SELECT 'Hello, world!';

or (for PostgreSQL's PL/pgSQL Procedural language)

 CREATE FUNCTION hello_world() RETURNS text AS $$
   BEGIN
      RETURN 'Hello, world!';
   END
 $$ LANGUAGE plpgsql;

or (e.g. T-SQL dialect)

PRINT 'Hello, world!'

or (for KB-SQL dialect)

 SELECT NULL FROM DATA_DICTIONARY.SQL_QUERY
 
 FOOTER ''OR HEADER OR DETAIL OR FINAL event''
 WRITE "Hello, world!"

STARLET[edit]

RACINE: HELLO_WORLD.

NOTIONS:
HELLO_WORLD : ecrire("Hello, world!").

Stata[edit]

Define program in script (.do-file) or at command line:

capture program drop hello /*Define Hello, world! program*/
program define hello   
     di "Hello, world!"
end

hello  /*run Hello, world! program*/

Or, interactively at the command line:

di "Hello, world!"

SuperCollider[edit]

"Hello, world!".postln;

or, for interactive prompt,

"Hello, world!"

Supernova[edit]

I want window and the window title is hello world.

Swift[edit]

println("Hello, world!")

TACL[edit]

#OUTPUT Hello, world!

TBS(To Be Simple)[edit]

!out(~"Hello, world!");
_die();

Tcl (Tool command language)[edit]

See also GUI section.

puts "Hello, world!"

Template Toolkit[edit]

[% GET "Hola mundo!"; %]

Thyme[edit]

 print ("Hello, world!")

TOM (rewriting language)[edit]

public class HelloWorld {
 %include { string.tom }
 public final static void main(String[] args) {
   String who = "world";
   %match(String who) {
     "World" -> { System.out.println("Hello, " + who + "!"); }
     _       -> { System.out.println("Don't panic"); }
   }
 }

TSQL[edit]

Declare @Output varchar(16)
Set @Output='Hello, world!'
Select 'Output' = @Output

or, simpler variations:

Select 'Hello, world!'
Print 'Hello, world!'

TTCN-3[edit]

module hello_world {
  control {
    log("Hello, world!");
  }
}

Turing[edit]

put "Hello world!"

UNIX-style shell[edit]

 echo 'Hello, world!'

or using an inline 'here document'

 cat <<'DELIM'
 Hello, world!
 DELIM

or

 printf '%s' $'Hello, world!\n'

or for a curses interface:

 dialog --msgbox 'Hello, world!' 0 0

Vala[edit]

using GLib;
 
public int main(string[] args)
{
       stdout.printf("Hello, world!\n");
       return 0;
}

Verilog[edit]

module main();
       initial begin
              #0 $display("Hello, world!!");
              #1 $finish;
       end
endmodule

or (a little more complicated)

module hello(clk);
       input clk;
       always @(posedge clk) $display("Hello, world!!");
endmodule
module main();
       reg     clk;
       hello H1(clk);
       initial begin
              #0 clk=0;
              #5 clk=1;
              #1 $finish;
       end
endmodule
module hello(clk);
       input clk;
       always @(posedge clk) $display("Hello, world!!");
endmodule
module main();
       reg     clk;
       hello H1(clk);
       initial begin
              #0 clk=0;
              #23 $display("--23--");
              #100 $finish;
       end
       always #5 clk=~clk;
endmodule

VHDL[edit]

use std.textio.all;
 
entity Hello is
end Hello;
 
architecture Hello_Arch of Hello is
begin
       p : process
       variable l:line;
       begin
               write(l, String'("Hello, world!"));
               writeline(output, l);
               wait;
       end process;
end Hello_Arch;

Visual Basic Script[edit]

WScript.Echo "Hello, world!"

Visual Prolog[edit]

#include @"pfc\console\console.ph"
 
goal
  console::init(),
  stdio::write("Hello, world!").

Windows PowerShell[edit]

"Hello, world!"

or

Write-Host "Hello, world!"

or

echo "Hello, world!"

or

[System.Console]::WriteLine("Hello, world!")

or

[void][System.Reflection.Assembly]::LoadWithPartialName('System.Windows.Forms')
[System.Windows.Forms.MessageBox]::Show("Hello, World!")

X#[edit]

sub:main
load:mscorlib.dll
push:Hello, World!
invoke:mscorlib.dll:System.Console:Write:1
endsub

XC[edit]

XC is a C like language from XMOS Ltd offering features supporting Communicating Sequential Processes on their multi-threaded, multi-core processors. This example shows some of those features.

#include <platform.h>
#define BIT_RATE 115200
#define BIT_TIME XS1_TIMER_HZ / BIT_RATE

// A one bit output port with buffering
out port:1 buffered uart_tx = PORT_UART_TX;

// Thread implements serial transmitter using the ports timer.
void console (chanend c, out port:1 buffered TXD)
{
        unsigned time;
        char byte;

        while (1)
        {
                c :> byte;                                      // Read byte from the consol output channel.
                TXD <: 0 @ time;                                // Set start bit and save IO time stamp.
                for (int j = 0; j < 8; j += 1)          // Data bits.
                {
                        time += BIT_TIME;               // Time of next bit.
                        TXD @ time <: >> byte;  // Shift out next bit on time.
                }
                time += BIT_TIME;                       // Two stop bits
                TXD @ time <: 1;
                time += BIT_TIME;
                TXD @ time <: 1;
        }
}

// Thread issues greeting message to the console
void greeter(chanend c)
{
        char msg[] = "Hello World!\n";
        int i;
        while (1)                                       // Repeatedly send message to console output channel.
        {
                for (i = 0; i < sizeof(msg) - 1; i++)
                {
                        c <: msg[i];                    // Output a byte to the channel.
                }
        }
}

int main()
{
        chan c;                                         // Communication channel between threads.
        par                                             // Parallel execution of block statements.
        {
                on stdcore[0]: console(c, uart_tx);     // Run console output thread on core 0.
                on stdcore[1]: greeter(c);              // Run greeter thread or core 1.
        }
        return 0;
}

XL[edit]

   use XL.UI.CONSOLE
   WriteLn "Hello, world!"

or

   import IO = XL.UI.CONSOLE
   IO.WriteLn "Hello, world!"

XMLmosaic[edit]

<Class>
  <Type>XMLmosaic Class</Type>
  <Method>
    <Name id="1">Main</Name>
    <Code id="1">void Main()
{
Console.WriteLine('Hello World!');
}
    </Code>
  </Method>
  <Counter>
    <Count>1</Count>
  </Counter>
</Class>

Yorick[edit]

write, "Hello, world!";

Note: The semicolon is optional.

Zdzich[edit]

Programming language with commands in Polish. Webpage

pisz Hello World!
koniec

Graphical user interfaces (GUIs)[edit]

ActionScript (Adobe Flash)[edit]

this.createTextField("hello_txt",0,10,10,100,20);
this.hello_txt.text="Hello, world!";

AppleScript[edit]

display dialog "Hello, world!" buttons {"OK"} default button 1

boo[edit]

import System.Drawing
import System.Windows.Forms
f = Form()
f.Controls.Add(Label(Text: "Hello, world!", Location: Point(40,30)))
f.Controls.Add(Button(Text: "Ok", Location: Point(50, 55), Click: {Application.Exit()}))
Application.Run(f)

Functional equivalent of C# program below.

C#[edit]

Simply, using Message Box:

 public class HelloWorld
 {
     static void Main()
     {
         System.Windows.Forms.MessageBox.Show("Hello, world!");
     }
 }

Or:

using System;
using System.Drawing;
using System.Windows.Forms;
 
 public class HelloWorldForm : Form 
 {
     public static void Main() 
     {
         Application.Run(new HelloWorldForm());
     }
 
     public HelloWorldForm() 
     {
        Label label = new Label();
        label.Text = "Hello, world!";
        label.Location = new Point(40,30);
        this.Controls.Add(label);
        Button button = new Button();
        button.Text = "OK";
        button.Location = new Point(50,55);
        this.Controls.Add(button);
        button.Click += new EventHandler(button_Click);
     }
 
     private void button_Click(Object sender, EventArgs e) 
     {
        Application.Exit();
     }
 }

Clarion[edit]

The simplest way to achieve this is with the built in message function that is similar to the windows messageBox().

   PROGRAM
   MAP
   END
   CODE
   MESSAGE('Hello, world!!','Clarion')
   RETURN

A more real world example uses a Clarion structure to declare a window and the Clarion Accept loop to process events from that window.

  PROGRAM
    MAP
HelloProcedure  PROCEDURE()
    END

    CODE
    HelloProcedure()
    RETURN

HelloProcedure  PROCEDURE()
Window WINDOW('Clarion for Windows'),AT(,,222,116),FONT('Tahoma',8,,FONT:regular),ICON('Hey.ICO'), |
         SYSTEM,GRAY
       STRING('Hello, world!!'),AT(91,22),USE(?String1)
       BUTTON('Close'),AT(92,78,37,14),USE(?CloseBtn),LEFT
     END
    CODE
    OPEN(Window)
    ACCEPT
      CASE ACCEPTED()
      OF ?CloseBtn
        POST(EVENT:CloseWindow)
      END
    END
    CLOSE(Window)
    RETURN

Cocoa or GNUStep (In Objective C)[edit]

#import <Cocoa/Cocoa.h>
@interface hello : NSObject {
}
@end
 
@implementation hello
 
-(void)awakeFromNib
{ 
     NSBeep(); // we don't need this but it's conventional to beep 
               // when you show an alert
     NSRunAlertPanel(@"Message from your Computer", @"Hello, world!", @"Hi!",
                     nil, nil);
}
 
@end

Curl[edit]

{curl 3.0, 4.0 applet}
{curl-file-attributes character-encoding = "utf-8"}

Hello, world!

Delphi, Kylix[edit]

program Hello_World;
uses    
  QDialogs;
 
begin
 
  ShowMessage('Hello, world!');
 
or
 
  MessageDlg ('Hello, world!', mtInformation, [mbOk], 0);
 
 
end.

Erlang[edit]

-module(hello_world).
-export([hello/0]).
 
hello() ->
   S = gs:start(),
   Win = gs:create(window, S, [{width, 100}, {height, 50}]),
   gs:create(label, Win, [{label, {text, "Hello, world!"}}]),
   gs:config(Win, {map, true}),
   receive
      {gs, Win, destroy, _, _} ->
         gs:stop()
   end,
   ok.

One way of invoking this would be to enter hello_world:hello(). in the Erlang shell; another would be to run from a command line:

erl -noshell -run hello_world hello -run init stop

Euphoria[edit]

MS-Windows only - basic.

include msgbox.e
if message_box("Hello, world!", "Hello", 0) then end if

MS-Windows only - using Win32Lib library

include win32lib.ew
createForm({
       ";Window; Hello",
       ";Label;  Hello, world!"
   })
include w32start.ew

F#[edit]

Using WindowsForms, at the F# interactive prompt:

let _ = System.Windows.Forms.MessageBox.Show("Hello, world!");;

FLTK2 (in C++)[edit]

#include <fltk/Window.h>
#include <fltk/Widget.h>
#include <fltk/run.h>
using namespace fltk;
 
int main(int argc, char **argv)
{
    Window *window = new Window(300, 180);
    window->begin();
        Widget *box = new Widget(20, 40, 260, 100, "Hello, world!");
        box->box(UP_BOX);
        box->labelfont(HELVETICA_BOLD_ITALIC);
        box->labelsize(36);
        box->labeltype(SHADOW_LABEL);
     window->end();
     window->show(argc, argv);
 
    return run();
 }

G (LabVIEW)[edit]

PUBLIC SUB Main()
  Message.Info("Hello, world!")
END

Gtk# (in C#)[edit]

using Gtk;
using GtkSharp;
using System;
 
class Hello {
 
    static void Main()
    {
        Application.Init ();
 
        Window window = new Window("");
        window.DeleteEvent += cls_evn;
        Button close  = new Button ("Hello, world!");
        close.Clicked += new EventHandler(cls_evn);
 
        window.Add(close);
        window.ShowAll();
 
        Application.Run ();
 
    }
 
    static void cls_evn(object obj, EventArgs args)
    {
        Application.Quit();
    }
 
}

GTK+ 2.x (in Euphoria)[edit]

include gtk2/wrapper.e
 
Info(NULL,"Hello","Hello, world!")

IOC/OCL (in IBM VisualAge for C++)[edit]

#include <iframe.hpp>
void main()
{
    IFrameWindow frame("Hello, world!");
    frame.showModally()
}

Java[edit]

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.SwingConstants;
 
public class HelloWorld {
 
	public static void main(final String[] args) {
		final JFrame frame = new JFrame();
		frame.add(new JLabel("Hello World", SwingConstants.CENTER));
		frame.setSize(200, 100);
		frame.setLocation(-frame.getWidth()/2, -frame.getHeight()/2);
		frame.setLocationRelativeTo(null);
		frame.setVisible(true);
	}
 
}

K[edit]

This creates a window labeled "Hello, world!" with a button labeled "Hello, world!".

hello:hello..l:"Hello, world!"
hello..c:`button
`show$`hello

Microsoft Foundation Classes (in C++)[edit]

#include <afx.h>
#include <afxwin.h>
 
class CHelloWin : public CWnd
{
protected:
 DECLARE_MESSAGE_MAP()
 afx_msg void OnPaint(void)
 {
 CPaintDC dc(this);
 dc.TextOut(15, 3, TEXT("Hello, world!"), 13);
 }
};
 
BEGIN_MESSAGE_MAP(CHelloWin, CWnd)
 ON_WM_PAINT()
END_MESSAGE_MAP()
 
class CHelloApp : public CWinApp
{
 virtual BOOL InitInstance();
};
 
CHelloApp theApp;
LPCTSTR wndClass;
 
BOOL CHelloApp::InitInstance()
{
 CWinApp::InitInstance();
 CHelloWin* hello = new CHelloWin();
 m_pMainWnd = hello;
 wndClass = AfxRegisterWndClass(CS_VREDRAW | CS_HREDRAW, 0, (HBRUSH)::GetStockObject(WHITE_BRUSH), 0);
 hello->CreateEx(0, wndClass, TEXT("Hello MFC"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 120, 50, NULL, NULL);
 hello->ShowWindow(SW_SHOW);
 hello->UpdateWindow();
 return TRUE;
}

Adobe Flex MXML[edit]

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">
<mx:Label text="Hello, world!"/>
</mx:Application>

NSIS[edit]

This creates a message box saying "Hello, world!".

OutFile "HelloWorld.exe"
Name "Hello, world!"
Caption "Hello, world!"
 
Section Hello, world!
SectionEnd
 
Function .onInit
    MessageBox MB_OK "Hello, world!" 
    Quit
FunctionEnd

OCaml[edit]

Uses lablgtk

let () = 
  let window = GWindow.window ~title:"Hello" ~border_width:10 () in
    window#connect#destroy ~callback:GMain.Main.quit;
    let button = GButton.button ~label:"Hello World" ~packing:window#add () in
      button#connect#clicked ~callback:window#destroy;
      window#show ();
      GMain.Main.main ()

OPL[edit]

(On Psion Series 3 and later compatible PDAs.)

PROC guihello:
  ALERT("Hello, world!","","Exit")
ENDP

or

PROC hello:
   dINIT "Window Title"
   dTEXT "","Hello, world!"
   dBUTTONS "OK",13
   DIALOG
ENDP

Pure Data[edit]

Patch as ASCII-art:

[Hello, world!(
|
[print]

Patch as sourcecode:

#N canvas 0 0 300 300 10;
#X msg 100 150 Hello, world!;
#X obj 100 200 print;
#X connect 0 0 1 0;

Python[edit]

Using Tkinter:

from Tkinter import *
 
root = Tk()
Label(root, text="Hello, world!").pack()
 
root.mainloop()

Using PyQt:

import sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *
 
app = QApplication(sys.argv)
label = QLabel("Hello, World!")
label.show()
sys.exit(app.exec_())

Using PyGTK:

from gtk import *
 
label = Label("Hello, world!")
label.show()
 
window = Window()
window.add(label)
window.show()
 
main()

Using Curves:

from math import *
 
def f(x):
    return int(round(96.75 + -21.98*cos(x*1.118) + 13.29*sin(x*1.118) + -8.387*cos(2*x*1.118)\
               + 17.94*sin(2*x*1.118) + 1.265*cos(3*x*1.118) + 16.58*sin(3*x*1.118)\
               + 3.988*cos(4*x*1.118) + 8.463*sin(4*x*1.118) + 0.3583*cos(5*x*1.118)\
               + 5.878*sin(5*x*1.118)))
 
print "".join([chr(f(x)) for x in range(12)])

Using Pygame:

import pygame
import sys
 
pygame.init()
screen = pygame.display.set_mode((512, 256), 0, 32)
f = pygame.font.SysFont(None, 32)
t = f.render("Hello, world!", True, (255, 255, 255))
tR = t.get_rect()
screen.blit(t, tR)
while True:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            pygame.quit()
            sys.exit()
    pygame.display.update()

Qt toolkit (in C++)[edit]

 #include <QApplication>
 #include <QMessageBox>
 
 int main(int argc, char * argv[])
 {
     QApplication app(argc, argv);
     QMessageBox::information(0, "Qt4", "Hello World!");
 }

or

 #include <qapplication.h>
 #include <qpushbutton.h>
 #include <qwidget.h>
 #include <iostream>
 
 class HelloWorld : public QWidget
 {
     Q_OBJECT
 
 public:
     HelloWorld();
     virtual ~HelloWorld();
 public slots:
     void handleButtonClicked();
     QPushButton *mPushButton;
 };
 
 HelloWorld::HelloWorld() :
     QWidget(),
     mPushButton(new QPushButton("Hello, world!", this))
 {
   connect(mPushButton, SIGNAL(clicked()), this, SLOT(handleButtonClicked()));
 }
 
 HelloWorld::~HelloWorld() {}
 
 void HelloWorld::handleButtonClicked()
 {
     std::cout << "Hello, world!" << std::endl;
 }
 
 int main(int argc, char *argv[])
 {
     QApplication app(argc, argv);
     HelloWorld helloWorld;
     app.setMainWidget(&helloWorld);
     helloWorld.show();
     return app.exec();
 }

or

 #include <QApplication>
 #include <QPushButton>
 #include <QVBoxLayout>
 
 int main(int argc, char *argv[])
 {
     QApplication app(argc, argv);
 
     QWidget *window = new QWidget;
     QVBoxLayout *layout = new QVBoxLayout(window);
     QPushButton *hello = new QPushButton("Hello, world!", window);
 
     //connect the button to quitting
     hello->connect(hello, SIGNAL(clicked()), &app, SLOT(quit()));
 
     layout->addWidget(hello);
     layout->setMargin(10);
     layout->setSpacing(10);
 
     window->show();
 
     return app.exec();
 }

Rebol[edit]

 view layout [text "Hello, world!"]

Robotic (MegaZeux)[edit]

* "Hello, world!"
end

RPL[edit]

(On Hewlett-Packard HP-48G and HP-49G series calculators.)

<< "Hello, world!" MSGBOX >>

RTML[edit]

Hello ()
TEXT "Hello, world!"

Ruby with WxWidgets[edit]

require 'wxruby'
 
class HelloWorldApp < Wx::App
 def on_init
  ourFrame = Wx::Frame.new(nil, -1, "Hello, world!").show
  ourDialogBox = Wx::MessageDialog.new(ourFrame, "Hello, world!", "Information:", \
                 Wx::OK|Wx::ICON_INFORMATION).show_modal
 end
end
 
HelloWorldApp.new.main_loop

Ruby with GTK+[edit]

require 'gtk2'
 
Gtk.init
window = Gtk::Window.new
window.signal_connect("delete_event") { Gtk.main_quit; false }
button = Gtk::Button.new("Hello, world!")
button.signal_connect("clicked") { Gtk.main_quit; false }
window.add(button)
window.show_all
Gtk.main

Ruby with Tk[edit]

require 'tk'
 
window = TkRoot.new { title 'Hello, world!' }
button = TkButton.new(window) {
 text 'Hello, world!'
 command proc { exit }
 pack
}
 
Tk.mainloop

Ruby[edit]

puts "Hello, world!"

Smalltalk[edit]

Evaluate in a workspace:

Dialog confirm: 'Hello, world!'

Using the Morphic GUI toolkit of Squeak Smalltalk:

('Hello, world!' asMorph openInWindow) submorphs second color: Color black

Using wxSqueak:

Wx messageBox: 'Hello, world!'

SWT (in Java)[edit]

import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Label;
 public class SWTHello {
     public static void main (String [] args) {
         Display display = new Display ();
         final Shell shell = new Shell(display);
         RowLayout layout = new RowLayout();
         layout.justify = true;
         layout.pack = true;
         shell.setLayout(layout);
         shell.setText("Hello, world!");
         Label label = new Label(shell, SWT.CENTER);
         label.setText("Hello, world!");
         shell.pack();
         shell.open ();
         while (!shell.isDisposed ()) {
             if (!display.readAndDispatch ()) display.sleep ();
         }
         display.dispose ();
     }
 }

Tk[edit]

label .l -text "Hello, world!"
pack .l

and the same in one line

pack [label .l -text "Hello, world!"]

Tcl with Tk[edit]

package require Tk
tk_messageBox -message "Hello, world!"

or

package require Tk
pack [button .b -text "Hello, world!" -command exit]

Ubercode[edit]

 Ubercode 1 class Hello
 public function main()
 code
   call Msgbox("Hello", "Hello, world!")
 end function
 end class

Uniface[edit]

 message "Hello, world!"

Virtools[edit]

VBA[edit]

Sub Main()
    MsgBox "Hello, world!"
End Sub

Visual Basic .NET 2003/2005[edit]

Private Sub Form_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
  MessageBox.Show("Hello, world!")
  Me.Close()    
End Sub

Note that the previous example will only work when the code is entered as part of a Form Load Event, such as the one created by default when generating a new project in the Visual Studio programming environment. Equivalently, the following code is roughly equivalent to the traditional Visual Basic 6 code by disabling the Application Framework and setting 'Sub Main' as the entry point for the application:

Public Module MyApplication
  Sub Main()
     MessageBox.Show("Hello, world!")
  End Sub
End Class

or using a class;

Public Class MyApplication
  Shared Sub Main()
     MessageBox.Show("Hello, world!")
  End Sub
End Class

Visual Prolog (note box)[edit]

#include @"pfc\vpi\vpi.ph"
 
goal
  vpiCommonDialogs::note("Hello, world!").

Windows API (in C)[edit]

This uses the Windows API to create a full window containing the text. Another example below uses the built-in MessageBox function instead.

/*
 Name: Win32 example
 Copyright: GLP
 Author: Ryon S. Hunter( BlackNine313@gmail.com )
 Date: 20/03/07 17:11
 Description: This is an example of what a Win32 hello world looks like.
*/

#include <windows.h>
#define APPTITLE "Win32 - Hello world"
BOOL InitInstance(HINSTANCE,int);
ATOM MyRegisterClass(HINSTANCE);
LRESULT CALLBACK WinProc(HWND,UINT,WPARAM,LPARAM);
LRESULT CALLBACK WinProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
       PAINTSTRUCT ps;
       COLORREF c = RGB( 0, 0, 0 );
       HDC hdc;
       RECT rt;
       switch(message)
       {
                      case WM_DESTROY: // Exit the window? Ok
                            PostQuitMessage(0);
                      break;
                       case WM_PAINT:
                           GetClientRect( hWnd, &rt );
                           hdc = BeginPaint( hWnd, &ps );
                           DrawText( hdc, "Hello world!", sizeof( "Hello world!" ), &rt, DT_CENTER );
                           EndPaint( hWnd, &ps );
                      break;
       }
       return DefWindowProc(hWnd,message,wParam,lParam);
}
ATOM MyRegisterClass(HINSTANCE hInstance)
{
    WNDCLASSEX wc;
    wc.cbSize = sizeof( WNDCLASSEX );
    wc.style = CS_HREDRAW | CS_VREDRAW;
    wc.lpfnWndProc = (WNDPROC)WinProc;
    wc.cbClsExtra = 0;
    wc.cbWndExtra = 0;
    wc.hInstance = 0;
    wc.hIcon = NULL;
    wc.hCursor = LoadCursor( NULL, IDC_ARROW );
    wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
    wc.lpszMenuName = NULL;
    wc.lpszClassName = APPTITLE;
    wc.hIconSm = NULL;
   
    return RegisterClassEx(&wc);
}
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
    HWND hWnd;
    hWnd = CreateWindow( // Create a win32 window
         APPTITLE,
         APPTITLE,
         WS_OVERLAPPEDWINDOW,
         CW_USEDEFAULT,
         CW_USEDEFAULT,
         500,
         400,
         NULL,
         NULL,
         hInstance,
         NULL);
    if(!hWnd){ return FALSE; }
    ShowWindow( hWnd, nCmdShow );
    UpdateWindow( hWnd );
    return TRUE;
}
int WINAPI WinMain( HINSTANCE hInstance,
                    HINSTANCE hPrevInstance,
                    LPSTR lpCmdLine,
                    int nCmdShow )
{
                    MSG msg;
                    MyRegisterClass(hInstance);
                    if(!InitInstance( hInstance,nCmdShow) )
                                      return 1;
                    while( GetMessage( &msg, NULL, 0, 0 ) )
                    {
                           TranslateMessage( &msg );
                           DispatchMessage( &msg );
                    }
                    return msg.wParam;
}

Xojo[edit]

In the Open event handler of the default window:

MsgBox("Hello world!")

XUL[edit]

<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin/" type="text/css"?>
<window id="yourwindow" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
<label value="Hello, World!"/>
</window>

Maple[edit]

with(Maplets):
with(Maplets[Elements]):
maplet := Maplet( "Hello world!" ):
Display( maplet );

Document formats[edit]

ASCII[edit]

The following sequence of characters, expressed in hexadecimal notation (with carriage return and newline characters at end of sequence):

48 65 6C 6C 6F 2C 20 77 6F 72 6C 64 21 0D 0A

The following sequence of characters, expressed as binary numbers (with cr/nl as above, and the same ordering of bytes):

00-07: 01001000 01100101 01101100 01101100 01101111 00101100 00100000 01110111
08-0E: 01101111 01110010 01101100 01100100 00100001 00001101 00001010

Page description languages[edit]

XHTML 1.1[edit]

(Using UTF-8 character set.)

 <?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
 <html xmlns="http://www.w3.org/1999/xhtml">
  <head>
   <title>Hello, world!</title>
  </head>
  <body>
   <p>Hello, world!</p>
  </body>
 </html>

HTML[edit]

Simple[edit]

<html>
  <body>
    Hello, world!
  </body>
</html>

Informal[edit]

The <html> and <body> tags are not necessary for informal testing. Simply write it as text without tags.

Hello, world!

HTML 4.01 Strict (full)[edit]

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Strict//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
  <head>
    <title>Hello, world!</title>
  </head>
  <body>
    <p>Hello, world!</p>
  </body>
</html>

The first paragraph of the W3C Recommendation on The global structure of an HTML document also features this example.

HTML 4.01 Strict (smallest)[edit]

This is the smallest legal version, leaving out all optional tags

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Strict//EN">
<title>Hello, world!</title>
<p>Hello, world!

HTML 5[edit]

<!DOCTYPE html>
<html>
  <head>
    <title>Hello, World!</title>
  </head>
  <body>
    <h1>Hello, world!</h1>  
  </body>
</html>

PDF[edit]

%PDF-1.0
1 0 obj
<<
/Type /Catalog
/Pages 3 0 R
/Outlines 2 0 R
>>
endobj
2 0 obj
<<
/Type /Outlines
/Count 0
>>
endobj
3 0 obj
<<
/Type /Pages
/Count 1
/Kids [4 0 R]
>>
endobj
4 0 obj
<<
/Type /Page
/Parent 3 0 R
/Resources << /Font << /F1 7 0 R >>/ProcSet 6 0 R
>>
/MediaBox [0 0 612 792]
/Contents 5 0 R
>>
endobj
5 0 obj
<< /Length 44 >>
stream
BT
/F1 24 TF
100 100 Td (Hello, world!) Tj
ET
endstream
endobj
6 0 obj
[/PDF /Text]
endobj
7 0 obj
<<
/Type /Font
/Subtype /Type1
/Name /F1
/BaseFont /Helvetica
/Encoding /MacRomanEncoding
>>
endobj
xref
0 8
0000000000 65535 f
0000000009 00000 n
0000000074 00000 n
0000000120 00000 n
0000000179 00000 n
0000000322 00000 n
0000000415 00000 n
0000000445 00000 n
trailer
<<
/Size 8
/Root 1 0 R
>>
startxref
553
%%EOF

This is a valid PDF only if the text file has CRLF line endings.

PostScript[edit]

% Displays on console.
(Hello, world!) =
%!
% Displays as page output.
/Courier findfont
24 scalefont
setfont
100 100 moveto
(Hello, world!) show
showpage

RTF[edit]

{\rtf1\ansi\deff0
{\fonttbl {\f0 Courier New;}}
\f0\fs20 Hello, world!
}

SVG[edit]

 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <svg xmlns="http://www.w3.org/2000/svg" width="200" height="100">
  <text x="50" y="50">Hello, world!</text>
 </svg>

TeX[edit]

Hello, world!
\bye

LaTeX 2ε[edit]

 \documentclass{article}
 \begin{document}
   Hello, world!
 \end{document}

ConTeXt[edit]

 \starttext
   Hello, world!
 \stoptext

Media-based scripting languages[edit]

AviSynth[edit]

 BlankClip()
 Subtitle("Hello, world!")

(Creates a video with default properties)

Lingo (Macromedia Director scripting language)[edit]

on exitFrame me
  put "Hello, world!"  
end

Outputs the string to the message window if placed in a single movie frame. Alternatively, to display an alert box stating the message you could use

on exitFrame me
  alert "Hello, world!"
end

POV-Ray[edit]

 #include "colors.inc"
 camera {
   location <3, 1, -10>
   look_at <3,0,0>
 }
 light_source { <500,500,-1000> White }
 text {
   ttf "timrom.ttf" "Hello, world!" 1, 0
   pigment { White }
 }

Esoteric programming languages[edit]

This page shows the Hello, world! program in esoteric programming languages — that is, working programming languages that were designed as experiments or jokes and were not intended for serious use.

Alef++[edit]

  use java.lang.*;
  main
  {
      System->out->println[ 'Hello, world!' ];
  }

Arrow[edit]

 ■→→■↓■←■←■↓■→→■  /* makes H */
 →→■↓■↑↑↑■        /* makes I */

Befunge[edit]

"!dlrow olleH">v
               :
               ,
              ^_@
v v"Hello, world!!"<
>                  ^
> >:#v_@
^   .<
0"!dlrow olleH">,:#<_@

BlooP, FlooP[edit]

From Eric Raymond's interpreter package (changed to use upper case as in the book).

   DEFINE PROCEDURE ''HELLO-WORLD''[N]:
   BLOCK 0: BEGIN
       PRINT['Hello, world!'];
   BLOCK 0: END.

brainfuck[edit]

+++++ +++++             initialize counter (cell #0) to 10
[                       use loop to set the next four cells to 70/100/30/10
    > +++++ ++              add  7 to cell #1
    > +++++ +++++           add 10 to cell #2 
    > +++                   add  3 to cell #3
    > +                     add  1 to cell #4
    <<<< -                  decrement counter (cell #0)
]                   
> ++ .                  print 'H'
> + .                   print 'e'
+++++ ++ .              print 'l'
.                       print 'l'
+++ .                   print 'o'
> ++ .                  print ' '
<< +++++ +++++ +++++ .  print 'W'
> .                     print 'o'
+++ .                   print 'r'
----- - .               print 'l'
----- --- .             print 'd'
> + .                   print '!'
> .                     print '\n'

Chef[edit]

   Hello, world! Souffle.
  
   Ingredients.
   72 g haricot beans
   101 eggs
   108 g lard
   111 cups oil
   32 zucchinis
   119 ml water
   114 g red salmon
   100 g dijon mustard
   33 potatoes
   
   Method.
   Put potatoes into the mixing bowl.
   Put dijon mustard into the mixing bowl.
   Put lard into the mixing bowl. 
   Put red salmon into the mixing bowl.
   Put oil into the mixing bowl.
   Put water into the mixing bowl.
   Put zucchinis into the mixing bowl.
   Put oil into the mixing bowl.
   Put lard into the mixing bowl.
   Put lard into the mixing bowl.
   Put eggs into the mixing bowl.
   Put haricot beans into the mixing bowl.
   Liquefy contents of the mixing bowl.
   Pour contents of the mixing bowl into the baking dish.
   
   Serves 1.

False[edit]

"Hello, World!
"

The newline before the terminating quote mark is necessary.

HQ9+[edit]

H

INTERCAL programming language[edit]

    PLEASE DO ,1 <- #13
    DO ,1 SUB #1 <- #238
    DO ,1 SUB #2 <- #112
    DO ,1 SUB #3 <- #112
    DO ,1 SUB #4 <- #0
    DO ,1 SUB #5 <- #64
    DO ,1 SUB #6 <- #238
    DO ,1 SUB #7 <- #26
 
    DO ,1 SUB #8 <- #248
    DO ,1 SUB #9 <- #168
    DO ,1 SUB #10 <- #24
    DO ,1 SUB #11 <- #16
    DO ,1 SUB #12 <- #158
    DO ,1 SUB #13 <- #52
    PLEASE READ OUT ,1
    PLEASE GIVE UP

LOLCODE[edit]

HAI;
    CAN HAS STDIO?;
    VISIBLE "Hello, World!";
KTHXBYE;

Malbolge programming language[edit]

(=<`:9876Z4321UT.-Q+*)M'&%$H"!~}|Bzy?=|{z]KwZY44Eq0/{mlk**hKs_dG5[m_BA{?-Y;;Vb'rR5431M}/.zHGwEDCBA@98\6543W10/.R,+O<

P programming language[edit]

"Hello, world!\n"

Perl[edit]

Not really an esoteric language, but this code uses obfuscation:

qq chop lc and print chr ord uc q chop uc and print chr ord q ne sin and 
print chr ord qw q le q and print chr ord q else and print chr ord q pop 
and print chr oct oct ord uc qw q bind q and print chr ord q q eq and print 
chr ord qw q warn q and print chr ord q pop and print chr ord q qr q and 
print chr ord q else and print chr ord qw q do q and print chr hex length 
q q semctl setpgrp chop q

SNUSP[edit]

   /e+++++++++++++++++++++++++++++.\  
   ./\/\/\  /+++\!>.+++o.l.+++++++l/                  #/?\  
$H!\++++++\ +   \comma.------------ .<w++++++++.\ /?\<!\-/
   /++++++/ +/\                      /.--------o/ \-/!.++++++++++/?\n
 /=\++++++\ +\\!=++++++\             \r+++.l------.d--------.>+.!\-/
 \!\/\/\/\/ \++++++++++/

Modular SNUSP:

      /@@@@++++#               #+++@@\                #-----@@@\n
$@\H.@/e.+++++++l.l.+++o.>>++++.< .<@/w.@\o.+++r.++@\l.@\d.>+.@/.#
  \@@@@=>++++>+++++<<@+++++#       #---@@/!=========/!==/

Spoon (programming language)[edit]

0101111111110010001111111111010000001101100101001011111110010001111110
1000000110111001010111111100101000101011100101001011111111111001000110
0000000000000000001000000110110000010100000000000000000000000000000000
0000000101001011111111111001000111111101000000110110010100101111110010
0011111101000000110110010101110010100000000000000000000010100000000000
0000000000000000101001011111111111001000110000000000000000000100000011
011000001010

Super NAND Time!![edit]

12 (32 35 37 38 42)
13 (35 37 38 39 43)
14 ((31 36 39 42 43))
15 (31 33 34 35 38 40 43)
16 (37 39)
17 ((31 43))
18 ((36 42 43))
20 ((42(43)))
21 44
31 ((31)(44))
32 (32(31))
33 (33(32))
34 (34(33))
35 (35(34))
36 (36(35))
37 (37(36))
38 (38(37))
39 (39(38))
40 (40(39))
41 (41(40))
42 (42(41))
43 (43(42))
44 1

Taxi programming language[edit]

"Hello, World!" is waiting at the Writer's Depot.
Go to Writer's Depot: west 1st left, 2nd right, 1st left, 2nd left.
Pickup a passenger going to the Post Office.
Go to the Post Office: north 1st right, 2nd right, 1st left.
Go to the Taxi Garage: north 1st right, 1st left, 1st right.

T programming language[edit]

%begin @jump $main
%main.0 @echo %msg
%main.1 @end
%main.count 2
%msg Hello, world!

This=That[edit]

x=Hello,world!
x=print

Unlambda programming language[edit]

  `r```````````.H.e.l.l.o. .w.o.r.l.di

Var'aq programming language[edit]

Note: actually prints "What do you want, universe?" in Klingon.

    ~ nuqneH { ~ 'u' ~ nuqneH disp disp } name
   nuqneH

Whitespace[edit]

Note that whitespace has been highlighted (Space, Tab)

   
   	  	   
		    	
   		  	 	
		    	 
   		 		  
		    		
   		 		  
		    
	  
   		 				
		    	 	
   	 		  
		    		 
   	     
		    			
   			 			
		  
  	   
   		 				
		    	  	
   			  	 
		    	 	 
   		 		  
		    	 		
   		  
	  
		    		  
   	    	
		    		 	
   		 	
		    			 
   	 	 
		    				
    
	
	     
empty-line
    	
empty-line
 			 
empty-line
	  	 
	
     	
	   
empty-line
  	
empty-line
   	 
empty-line
empty-line/EOF

XS programming language[edit]

<print>Hello, world!</print>

Ya programming language[edit]

@HelloWorld.Ya;
using <stdio.h>;
$int($char[][] args) main
	printf("Hello, %s!\n", args.Length > 1 ? args[1] : "World");
	return 0;

DUNNBOL1[edit]

A code language that draws in binary on a braille plotter (note that this is just the word HELLO).

BGN GRPLOT BIN
DRAWPLOT

00000000000000000000000000000000000000000000000000000000
00111001110011111110011100000000111000000000011111000000
00010000100001000010001000000000010000000000100000100000
00010000100001000000001000000000010000000000100000100000
00011111100001111000001000000000010000000000100000100000
00010000100001000000001000000000010000000000100000100000
00010000100001000010001000000000010000000000100000100000
00111001110011111110011111111000111111110000011111000000
00000000000000000000000000000000000000000000000000000000

ENDDRAW
END