C Programming/Standard library reference
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Headers
editANSI C (C89)/ISO C (C90)
editassert.h | Verify program assertion file |
ctype.h | Character types file. |
errno.h | System error numbers file |
float.h | Floating types file |
limits.h | Implementation-defined constants file. |
locale.h | Category macros file. |
math.h | Mathematical declarations file. |
setjmp.h | Stack environment declarations file. |
signal.h | Signals file. |
stdarg.h | Handle variable argument list file. |
stddef.h | Standard type definitions file. |
stdio.h | Standard buffered input/output file. |
stdlib.h | Standard library definitions file. |
string.h | String operations file. |
time.h | Time types file. |
ISO C (C94/C95), Amendment 1 (AMD1)
editVery old compilers may not include some or all of these headers
iso646.h | Alternative spellings. |
wchar.h | Wide-character handling. |
wctype.h | Wide-character classification and mapping utilities. |
ISO C (C99)
editThese are supported only in newer compilers
complex.h | Complex arithmetic. |
fenv.h | Floating-point environment. |
inttypes.h | Fixed size integer types. |
stdbool.h | Boolean type and values. |
stdint.h | Integer types. |
tgmath.h | Type-generic macros. |
ISO C (C11)
editThese are supported only in newer compilers
stdalign.h | Alignment keywords and macros. |
stdatomic.h | Atomic operations on data shared between threads. |
stdnoreturn.h | _Noreturn function specifier macro. |
threads.h | Support for multiple threads of execution. |
uchar.h | Types and functions for manipulating Unicode characters. |
Table of functions
editThis table also includes function-like macros