List of C functions

List of C functions

This page aims to alphabetically list all the predefined functions used in the C standard library, and a few of the non-standard functions.

* assert.h
** (no functions)
* ctype.h
** (non-standard) digittoint
** isalnum
** isalpha
** (non-standard) isascii
** isblank
** iscntrl
** isdigit
** isgraph
** islower
** isprint
** ispunct
** isspace
** isupper
** isxdigit
** (non-standard) toascii
** tolower
** toupper
* errno.h
** (no functions)
* float.h
** (no functions)
* limits.h
** (no functions)
* locale.h
** localeconv
** setlocale
* math.h
** acos
** asin
** atan
** atan2
** atof
** ceil
** cos
** cosh
** exp
** fabs
** floor
** fmod
** frexp
** ldexp
** log
** log10
** modf
** pow
** sin
** sinh
** sqrt
** tan
** tanh
* setjmp.h
** longjmp, setjmp
* signal.h
** raise
* stdarg.h
** (no functions)
* stddef.h
** (macro) offsetof
* stdio.h
** clearerr
** fclose
** feof
** ferror
** fflush
** fgetc
** fgetpos
** fgets
** fopen, freopen, (non-standard) fdopen
** fprintf
** fputc
** fputs
** fread
** fscanf
** fseek
** fsetpos
** ftell
** fwrite
** getc
** getchar
** gets
** perror
** printf, fprintf, sprintf, (non-standard) snprintf
** putc
** putchar, (non-standard) fputchar
** puts
** remove
** rename
** rewind
**
** setbuf
** setvbuf
** tmpfile
** tmpnam
** ungetc
** vprintf, vfprintf, vsprintf
* stdlib.h
** abort
** abs, labs
** atexit
** atof
** atoi
** atol
** bsearch
** calloc
** div, ldiv
** exit
** free
** (non-standard) itoa
** getenv
** ldiv
** (non-standard) ltoa
** malloc, calloc, and realloc
** qsort
** rand
** srand
** strtod
** strtol
** strtoul
** system
* string.h
** memchr
** memcmp
** memcpy
** memmove
** memset
** strcat, strncat
** strchr
** strcmp, strncmp
** strcoll
** strcpy, strncpy
** strcspn
** strerror
** strlen
** strpbrk
** strrchr
** strspn
** strstr
** strtok
** strxfrm
* time.h
** asctime
** clock
** ctime
** difftime
** gmtime
** localtime
** mktime
** strftime
** time
*wchar.h
**btowc
**fgetwc
**fgetws
**fputwc
**fputws
**fwide
**fwprintf
**fwscanf
**(macro) getwc
**(macro) getwchar
**mbrlen
**mbrtowc
**mbsinit
**mbsrtowcs
**(macro) putwc
**(macro) putwchar
**swprintf
**swscanf
**ungetwc
**vfwprintf
**vswprintf
**vwprintf
**wcrtomb
**wcscat
**wcschr
**wcscmp
**wcscoll
**wcscpy
**wcscspn
**wcsftime
**wcslen
**wcsncat
**wcsncmp
**wcsncpy
**wcspbrk
**wcsrchr
**wcsrtombs
**wcsspn
**wcsstr
**wcstod
**wcstok
**wcstol
**wcstoul
**wcsxfrm
**wctob
**wmemchr
**wmemcmp
**wmemcpy
**wmemmove
**wmemset
**wprintf
**wscanf
*wctype.h
**iswalnum
**iswalpha
**iswcntrl
**iswctype
**iswdigit
**iswgraph
**iswlower
**iswprint
**iswpunct
**iswspace
**iswupper
**iswxdigit
**towctrans
**towlower
**towupper
**wctrans
**wctype

Non-standard headers

* alloc.h
** farmalloc
* conio.h
** getch, getche


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