C Programming/Standard library reference

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Standard libraries by functionality[edit]

Date and Time[edit]

Input/Output[edit]

Streams[edit]

File descriptors[edit]

Mathematics[edit]

Virtual memory allocation[edit]

Standard libraries by header[edit]

ANSI C (C89)/ISO C (C90)[edit]

ISO C (C94/C95), Amendment 1 (AMD1)[edit]

Very old compilers may not include some or all of these headers

ISO C (C99)[edit]

These are supported only in newer compilers

ISO C (C11)[edit]

These are supported only in newer compilers

Table of functions[edit]

assert.h[edit]

complex.h[edit]

ctype.h[edit]

errno.h[edit]

fenv.h[edit]

float.h[edit]

inttypes.h[edit]


iso646.h[edit]

limits.h[edit]

locale.h[edit]

math.h[edit]

setjmp.h[edit]

signal.h[edit]

stdarg.h[edit]

stdbool.h[edit]

stddef.h[edit]

stdint.h[edit]

stdio.h[edit]

stdlib.h[edit]

string.h[edit]

tgmath.h[edit]

time.h[edit]

wchar.h[edit]

wctype.h[edit]