Ada Programming/Delimiters/*

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float

Operator[edit]

Standard Operations[edit]

Arithmetic Multiplication[edit]

The "*" operator is defined as arithmetic multiplication for all numeric types.

 function "*" (Left, Right : T)  return T;
Usage[edit]
A :  constant Float   := 5.0 * 2.0;  -- A is now 10.0
B :  constant Integer := 5 * 2;      -- B is also 10
Working Example[edit]
File: operator_multiply.adb (view, plain text, download page, browse all)
 with Ada.Text_IO;

 procedure Operator_Multiply  is
   A :  constant Float   := 5.0 * 2.0;  -- A is now 10.0
   B :  constant Integer := 5 * 2;      -- B is also 10

    package T_IO  renames Ada.Text_IO;
    package F_IO  is  new  Ada.Text_IO.Float_IO (Float);
    package I_IO  is  new  Ada.Text_IO.Integer_IO (Integer);

 begin
   T_IO.Put ("A = ");
   F_IO.Put (
      Item => A,
      Fore => 3,
      Aft  => 1,
      Exp  => 0);
   T_IO.New_Line;
   T_IO.Put ("B = ");
   I_IO.Put (
      Item  => B,
      Width => 3,
      Base  => 10);
   T_IO.New_Line;
 end Operator_Multiply;

Common Non-Standard Operations[edit]

Character replication[edit]

A String is created where a single character is replicated n-times.

 function "*" (Left : Natural; Right : Character)  return String;

In addition to standard Strings this operator is also defined for Bounded_String and Unbounded_String.

Usage[edit]
A :  constant String := 10 * 'X';  -- A is filled with 10 X
Working Example[edit]

The character replication operator is part of the Ada.Strings.Fixed package. You need to with and use the package to make the operator visible.

File: operator_multiply_2.adb (view, plain text, download page, browse all)
 with Ada.Text_IO;
 with Ada.Strings.Fixed;

 procedure Operator_Multiply_2  is
    use Ada.Strings.Fixed;

   A :  constant String := 10 * 'X';  -- A is filled with 10 X

    package T_IO  renames Ada.Text_IO;

 begin
   T_IO.Put_Line ("A = " & A);
 end Operator_Multiply_2;

String replication[edit]

A String is created where a source string is replicated n-times.

 function "*" (Left : Natural; Right : String)  return String;

In addition to standard fixed strings this operator is also defined for Bounded_String and Unbounded_String.

Usage[edit]
A :  constant String := 3 * "Hello ";  -- A is filled with 3 Hello
Working Example[edit]

The string replication operator is part of the Ada.Strings.Fixed package. You need to with and use the package to make the operator visible.

File: operator_multiply_3.adb (view, plain text, download page, browse all)
 with Ada.Text_IO;
 with Ada.Strings.Fixed;

 procedure Operator_Multiply_3  is
    use Ada.Strings.Fixed; 

   A :  constant String := 3 * "Hello ";  -- A is filled with 3 Hello.

    package T_IO  renames Ada.Text_IO;

 begin
   T_IO.Put_Line ("A = " & A);
 end Operator_Multiply_3;

See also[edit]

Wikibook[edit]

Ada 95 Reference Manual[edit]

Ada 2005 Reference Manual[edit]



Ada Operators
and and then > + abs &
or or else >= - mod
xor = < * rem in
not /= <= ** / not in