CRT Alphabetical Function Reference

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04/28/2015

The C Run-Time (CRT) Library reference documentation is arranged alphabetically by routine. To find a CRT routine based on functionality, see Run-Time Routines by Category.

_abnormal_termination

_access, _waccess

_access_s, _waccess_s

acos, acosf, acosl

acosh, acoshf, acoshl

_aligned_free_dbg

_aligned_malloc

_aligned_malloc_dbg

_aligned_msize_dbg

_aligned_offset_malloc

_aligned_offset_malloc_dbg

_aligned_offset_realloc

_aligned_offset_realloc_dbg

_aligned_offset_recalloc

_aligned_offset_recalloc_dbg

_aligned_realloc

_aligned_realloc_dbg

_aligned_recalloc

_aligned_recalloc_dbg

asctime, _wasctime

asctime_s, _wasctime_s

asin, asinf, asinl

asinh, asinhf, asinhl

_ASSERT, _ASSERTE Macros

atan, atanf, atanl, atan2, atan2f, atan2l

atanh, atanhf, atanhl

_atodbl, _atodbl_l, _atoldbl, _atoldbl_l, _atoflt _atoflt_l

atof, _atof_l, _wtof, _wtof_l

atoi, _atoi_l, _wtoi, _wtoi_l

_atoi64, _atoi64_l, _wtoi64, _wtoi64_l

atol, _atol_l, _wtol, _wtol_l

_beginthread, _beginthreadex

Bessel Functions

Bessel Functions: _j0, _j1, _jn

Bessel Functions: _y0, _y1, _yn

_byteswap_uint64, _byteswap_ulong, _byteswap_ushort

cbrt, cbrtf, cbrtl

ceil, ceilf, ceill

_cexit, _c_exit

_cgets, _cgetws

_cgets_s, _cgetws_s

_chdir, _wchdir

_chgsign, _chgsignf, _chgsignl

_chmod, _wchmod

_clear87, _clearfp

_configthreadlocale

_control87, _controlfp, __control87_2

copysign, copysignf, copysignl, _copysign, _copysignf, _copysignl

cos, cosf, cosl, cosh, coshf, coshl

_cprintf, _cprintf_l, _cwprintf, _cwprintf_l

_cprintf_p, _cprintf_p_l, _cwprintf_p, _cwprintf_p_l

_cprintf_s, _cprintf_s_l, _cwprintf_s, _cwprintf_s_l

_cputs, _cputws

_creat, _wcreat

_create_locale, _wcreate_locale

_CrtCheckMemory

_CrtDbgReport, _CrtDbgReportW

_CrtDoForAllClientObjects

_CrtDumpMemoryLeaks

_CrtGetAllocHook

_CrtGetDumpClient

_CrtGetReportHook

_CrtIsMemoryBlock

_CrtIsValidHeapPointer

_CrtIsValidPointer

_CrtMemCheckpoint

_CrtMemDifference

_CrtMemDumpAllObjectsSince

_CrtMemDumpStatistics

_CrtReportBlockType

_CrtSetAllocHook

_CrtSetBreakAlloc

_CrtSetDebugFillThreshold

_CrtSetDumpClient

_CrtSetReportFile

_CrtSetReportHook

_CrtSetReportHook2, _CrtSetReportHookW2

_CrtSetReportMode

_cscanf, _cscanf_l, _cwscanf, _cwscanf_l

_cscanf_s, _cscanf_s_l, _cwscanf_s, _cwscanf_s_l

ctime, _ctime32, _ctime64, _wctime, _wctime32, _wctime64

ctime_s, _ctime32_s, _ctime64_s, _wctime_s, _wctime32_s, _wctime64_s

__CxxFrameHandler

_CxxThrowException

difftime, _difftime32, _difftime64

_dupenv_s, _wdupenv_s

_dupenv_s_dbg, _wdupenv_s_dbg

_endthread, _endthreadex

_exec, _wexec Functions

_execl, _wexecl

_execle, _wexecle

_execlp, _wexeclp

_execlpe, _wexeclpe

_execv, _wexecv

_execve, _wexecve

_execvp, _wexecvp

_execvpe, _wexecvpe

fclose, _fcloseall

_fdopen, _wfdopen

_fgetc_nolock, _fgetwc_nolock

_fgetchar, _fgetwchar

_filelength, _filelengthi64

_find, _wfind Functions

_findfirst, _wfindfirst

_findnext, _wfindnext

Flag Directives

floor, floorf, floorl

fopen_s, _wfopen_s

Format Specification Syntax: printf and wprintf Functions

Format Specification Fields: scanf and wscanf Functions

fprintf, _fprintf_l, fwprintf, _fwprintf_l

_fprintf_p, _fprintf_p_l, _fwprintf_p, _fwprintf_p_l

fprintf_s, _fprintf_s_l, fwprintf_s, _fwprintf_s_l

_fputc_nolock, _fputwc_nolock

_fputchar, _fputwchar

freopen, _wfreopen

freopen_s, _wfreopen_s

fscanf, _fscanf_l, fwscanf, _fwscanf_l

fscanf_s, _fscanf_s_l, fwscanf_s, _fwscanf_s_l

fseek, _fseeki64

_fseek_nolock, _fseeki64_nolock

_fsopen, _wfsopen

_fstat, _fstat32, _fstat64, _fstati64, _fstat32i64, _fstat64i32

ftell, _ftelli64

_ftell_nolock, _ftelli64_nolock

_ftime, _ftime32, _ftime64

_ftime_s, _ftime32_s, _ftime64_s

_fullpath, _wfullpath

_fullpath_dbg, _wfullpath_dbg

_futime, _futime32, _futime64

_get_current_locale

_get_heap_handle

_get_output_format

_get_printf_count_output

_get_unexpected

_getc_nolock, _getwc_nolock

_getch, _getwch

_getch_nolock, _getwch_nolock

getchar, getwchar

_getchar_nolock, _getwchar_nolock

_getche, _getwche

_getche_nolock, _getwche_nolock

_getcwd, _wgetcwd

_getcwd_dbg, _wgetcwd_dbg

_getdcwd, _wgetdcwd

_getdcwd_dbg, _wgetdcwd_dbg

_getdcwd_nolock, _wgetdcwd_nolock

getenv, _wgetenv

getenv_s, _wgetenv_s

gets_s, _getws_s

gmtime, _gmtime32, _gmtime64

gmtime_s, _gmtime32_s, _gmtime64_s

hypot, hypotf, hypotl, _hypot, _hypotf, _hypotl

_initterm, _initterm_e

_inp, _inpw, _inpd

is, isw Routines

isalnum, iswalnum, _isalnum_l, _iswalnum_l

isalpha, iswalpha, _isalpha_l, _iswalpha_l

__isascii, iswascii

iscntrl, iswcntrl, _iscntrl_l, _iswcntrl_l

iscsym, iscsymf

__iscsym, __iswcsym, __iscsymf, __iswcsymf, _iscsym_l, _iswcsym_l, _iscsymf_l, _iswcsymf_l

_isctype, iswctype, _isctype_l, _iswctype_l

isdigit, iswdigit, _isdigit_l, _iswdigit_l

isgraph, iswgraph, _isgraph_l, _iswgraph_l

isleadbyte, _isleadbyte_l

islower, iswlower, _islower_l, _iswlower_l

_ismbb Routines

_ismbbalnum, _ismbbalnum_l

_ismbbalpha, _ismbbalpha_l

_ismbbgraph, _ismbbgraph_l

_ismbbkalnum, _ismbbkalnum_l

_ismbbkana, _ismbbkana_l

_ismbbkprint, _ismbbkprint_l

_ismbbkpunct, _ismbbkpunct_l

_ismbblead, _ismbblead_l

_ismbbprint, _ismbbprint_l

_ismbbpunct, _ismbbpunct_l

_ismbbtrail, _ismbbtrail_l

_ismbc Routines

_ismbcalnum, _ismbcalnum_l, _ismbcalpha, _ismbcalpha_l, _ismbcdigit, _ismbcdigit_l

_ismbcgraph, _ismbcgraph_l, _ismbcprint, _ismbcprint_l, _ismbcpunct, _ismbcpunct_l, _ismbcblank, _ismbcblank_l, _ismbcspace, _ismbcspace_l

_ismbchira, _ismbchira_l, _ismbckata, _ismbckata_l

_ismbcl0, _ismbcl0_l, _ismbcl1, _ismbcl1_l, _ismbcl2, _ismbcl2_l

_ismbclegal, _ismbclegal_l, _ismbcsymbol, _ismbcsymbol_l

_ismbclower, _ismbclower_l, _ismbcupper, _ismbcupper_l

_ismbslead, _ismbstrail, _ismbslead_l, _ismbstrail_l

isprint, iswprint, _isprint_l, _iswprint_l

ispunct, iswpunct, _ispunct_l, _iswpunct_l

isspace, iswspace, _isspace_l, _iswspace_l

isupper, _isupper_l, iswupper, _iswupper_l

isxdigit, iswxdigit, _isxdigit_l, _iswxdigit_l

_itoa, _i64toa, _ui64toa, _itow, _i64tow, _ui64tow

_itoa_s, _i64toa_s, _ui64toa_s, _itow_s, _i64tow_s, _ui64tow_s

localtime, _localtime32, _localtime64

localtime_s, _localtime32_s, _localtime64_s

log, logf, log10, log10f

logb, logbf, logbl, _logb, _logbf

_lseek, _lseeki64

_ltoa_s, _ltow_s

_makepath, _wmakepath

_makepath_s, _wmakepath_s

_mbbtombc, _mbbtombc_l

_mbbtype, _mbbtype_l

_mbccpy, _mbccpy_l

_mbccpy_s, _mbccpy_s_l

_mbcjistojms, _mbcjistojms_l, _mbcjmstojis, _mbcjmstojis_l

_mbclen, mblen, _mblen_l

_mbctohira, _mbctohira_l, _mbctokata, _mbctokata_l

_mbctolower, _mbctolower_l, _mbctoupper, _mbctoupper_l

_mbctombb, _mbctombb_l

_mbsbtype, _mbsbtype_l

_mbsnbcat, _mbsnbcat_l

_mbsnbcat_s, _mbsnbcat_s_l

_mbsnbcmp, _mbsnbcmp_l

_mbsnbcoll, _mbsnbcoll_l, _mbsnbicoll, _mbsnbicoll_l

_mbsnbcpy, _mbsnbcpy_l

_mbsnbcpy_s, _mbsnbcpy_s_l

_mbsnbicmp, _mbsnbicmp_l

_mbsnbset, _mbsnbset_l

_mbsnbset_s, _mbsnbset_s_l

mbstowcs, _mbstowcs_l

mbstowcs_s, _mbstowcs_s_l

mbtowc, _mbtowc_l

memchr, wmemchr

memcmp, wmemcmp

memcpy, wmemcpy

memcpy_s, wmemcpy_s

_memicmp, _memicmp_l

memmove, wmemmove

memmove_s, wmemmove_s

memset, wmemset

_mkdir, _wmkdir

_mkgmtime, _mkgmtime32, _mkgmtime64

_mktemp, _wmktemp

_mktemp_s, _wmktemp_s

mktime, _mktime32, _mktime64

nan, nanf, nanl

nextafter, nextafterf, nextafterl, _nextafter, _nextafterf

_onexit, _onexit_m

_open_osfhandle

operator delete (CRT)

operator delete[] (CRT)

operator new (CRT)

operator new[] (CRT)

_outp, _outpw, _outpd

perror, _wperror

_popen, _wpopen

pow, powf, powl

Precision Specification

printf Type Field Characters

printf Width Specification

printf, _printf_l, wprintf, _wprintf_l

printf_p Positional Parameters

_printf_p, _printf_p_l, _wprintf_p, _wprintf_p_l

printf_s, _printf_s_l, wprintf_s, _wprintf_s_l

_putc_nolock, _putwc_nolock

_putch, _putwch

_putch_nolock, _putwch_nolock

putchar, putwchar

_putchar_nolock, _putwchar_nolock

_putenv, _wputenv

_putenv_s, _wputenv_s

_query_new_handler

_query_new_mode

remove, _wremove

rename, _wrename

rint, rintf, rintl

_rmdir, _wrmdir

_rotl, _rotl64, _rotr, _rotr64

_RPT, _RPTF, _RPTW, _RPTFW Macros

_RTC_GetErrDesc

_RTC_SetErrorFunc

_RTC_SetErrorFuncW

_RTC_SetErrorType

scalbn, scalbnf, scalbnl, scalbln, scalblnf, scalblnl

scanf Type Field Characters

scanf Width Specification

scanf, _scanf_l, wscanf, _wscanf_l

scanf_s, _scanf_s_l, wscanf_s, _wscanf_s_l

_scprintf, _scprintf_l, _scwprintf, _scwprintf_l

_scprintf_p, _scprintf_p_l, _scwprintf_p, _scwprintf_p_l

_searchenv, _wsearchenv

_searchenv_s, _wsearchenv_s

__security_init_cookie

_set_abort_behavior

_set_error_mode

_set_invalid_parameter_handler

_set_new_handler

_set_output_format

_set_printf_count_output

_set_purecall_handler

_set_se_translator

_set_SSE2_enable

set_terminate (CRT)

set_unexpected (CRT)

setlocale, _wsetlocale

sin, sinf, sinl, sinh, sinhf, sinhl

Size Specification

_snprintf, _snprintf_l, _snwprintf, _snwprintf_l

_snprintf_s, _snprintf_s_l, _snwprintf_s, _snwprintf_s_l

_snscanf, _snscanf_l, _snwscanf, _snwscanf_l

_snscanf_s, _snscanf_s_l, _snwscanf_s, _snwscanf_s_l

_sopen, _wsopen

_sopen_s, _wsopen_s

_spawn, _wspawn Functions

_spawnl, _wspawnl

_spawnle, _wspawnle

_spawnlp, _wspawnlp

_spawnlpe, _wspawnlpe

_spawnv, _wspawnv

_spawnve, _wspawnve

_spawnvp, _wspawnvp

_spawnvpe, _wspawnvpe

_splitpath, _wsplitpath

_splitpath_s, _wsplitpath_s

sprintf, _sprintf_l, swprintf, _swprintf_l, __swprintf_l

_sprintf_p, _sprintf_p_l, _swprintf_p, _swprintf_p_l

sprintf_s, _sprintf_s_l, swprintf_s, _swprintf_s_l

sqrt, sqrtf, sqrtl

sscanf, _sscanf_l, swscanf, _swscanf_l

sscanf_s, _sscanf_s_l, swscanf_s, _swscanf_s_l

_stat, _wstat Functions

_STATIC_ASSERT Macro

_status87, _statusfp, _statusfp2

strcat, wcscat, _mbscat

strcat_s, wcscat_s, _mbscat_s

strchr, wcschr, _mbschr, _mbschr_l

strcmp, wcscmp, _mbscmp

strcoll Functions

strcoll, wcscoll, _mbscoll, _strcoll_l, _wcscoll_l, _mbscoll_l

strcpy, wcscpy, _mbscpy

strcpy_s, wcscpy_s, _mbscpy_s

strcspn, wcscspn, _mbscspn, _mbscspn_l

_strdate, _wstrdate

_strdate_s, _wstrdate_s

_strdec, _wcsdec, _mbsdec, _mbsdec_l

_strdup, _wcsdup, _mbsdup

_strdup_dbg, _wcsdup_dbg

strerror, _strerror, _wcserror, __wcserror

strerror_s, _strerror_s, _wcserror_s, __wcserror_s

strftime, wcsftime, _strftime_l, _wcsftime_l

stricmp, wcsicmp

_stricmp, _wcsicmp, _mbsicmp, _stricmp_l, _wcsicmp_l, _mbsicmp_l

_stricoll, _wcsicoll, _mbsicoll, _stricoll_l, _wcsicoll_l, _mbsicoll_l

_strinc, _wcsinc, _mbsinc, _mbsinc_l

String to Numeric Value Functions

strlen, wcslen, _mbslen, _mbslen_l, _mbstrlen, _mbstrlen_l

_strlwr, _wcslwr, _mbslwr, _strlwr_l, _wcslwr_l, _mbslwr_l

_strlwr_s, _strlwr_s_l, _mbslwr_s, _mbslwr_s_l, _wcslwr_s, _wcslwr_s_l

strncat, _strncat_l, wcsncat, _wcsncat_l, _mbsncat, _mbsncat_l

strncat_s, _strncat_s_l, wcsncat_s, _wcsncat_s_l, _mbsncat_s, _mbsncat_s_l

strncmp, wcsncmp, _mbsncmp, _mbsncmp_l

_strncnt, _wcsncnt, _mbsnbcnt, _mbsnbcnt_l, _mbsnccnt, _mbsnccnt_l

_strncoll, _wcsncoll, _mbsncoll, _strncoll_l, _wcsncoll_l, _mbsncoll_l

strncpy, _strncpy_l, wcsncpy, _wcsncpy_l, _mbsncpy, _mbsncpy_l

strncpy_s, _strncpy_s_l, wcsncpy_s, _wcsncpy_s_l, _mbsncpy_s, _mbsncpy_s_l

_strnextc, _wcsnextc, _mbsnextc, _mbsnextc_l

strnicmp, wcsnicmp

_strnicmp, _wcsnicmp, _mbsnicmp, _strnicmp_l, _wcsnicmp_l, _mbsnicmp_l

_strnicoll, _wcsnicoll, _mbsnicoll, _strnicoll_l, _wcsnicoll_l, _mbsnicoll_l

_strninc, _wcsninc, _mbsninc, _mbsninc_l

strnlen, strnlen_s, wcsnlen, wcsnlen_s, _mbsnlen, _mbsnlen_l, _mbstrnlen, _mbstrnlen_l

strnset, wcsnset

_strnset, _strnset_l, _wcsnset, _wcsnset_l, _mbsnset, _mbsnset_l

_strnset_s, _strnset_s_l, _wcsnset_s, _wcsnset_s_l, _mbsnset_s, _mbsnset_s_l

strpbrk, wcspbrk, _mbspbrk, _mbspbrk_l

strrchr, wcsrchr, _mbsrchr, _mbsrchr_l

_strrev, _wcsrev, _mbsrev, _mbsrev_l

_strset, _strset_l, _wcsset, _wcsset_l, _mbsset, _mbsset_l

_strset_s, _strset_s_l, _wcsset_s, _wcsset_s_l, _mbsset_s, _mbsset_s_l

strspn, wcsspn, _mbsspn, _mbsspn_l

_strspnp, _wcsspnp, _mbsspnp, _mbsspnp_l

strstr, wcsstr, _mbsstr, _mbsstr_l

_strtime, _wstrtime

_strtime_s, _wstrtime_s

strtod, _strtod_l, wcstod, _wcstod_l

_strtoi64, _wcstoi64, _strtoi64_l, _wcstoi64_l

strtok, _strtok_l, wcstok, _wcstok_l, _mbstok, _mbstok_l

strtok_s, _strtok_s_l, wcstok_s, _wcstok_s_l, _mbstok_s, _mbstok_s_l

strtol, wcstol, _strtol_l, _wcstol_l

_strtoui64, _wcstoui64, _strtoui64_l, _wcstoui64_l

strtoul, _strtoul_l, wcstoul, _wcstoul_l

_strupr, _strupr_l, _mbsupr, _mbsupr_l, _wcsupr_l, _wcsupr

_strupr_s, _strupr_s_l, _mbsupr_s, _mbsupr_s_l, _wcsupr_s, _wcsupr_s_l

strxfrm, wcsxfrm, _strxfrm_l, _wcsxfrm_l

system, _wsystem

tan, tanf, tanl, tanh, tanhf, tanhl

_tell, _telli64

_tempnam, _wtempnam, tmpnam, _wtmpnam

_tempnam_dbg, _wtempnam_dbg

terminate (CRT)

time, _time32, _time64

tmpnam_s, _wtmpnam_s

tolower, _tolower, towlower, _tolower_l, _towlower_l

toupper, _toupper, towupper, _toupper_l, _towupper_l

_ultoa_s, _ultow_s

__uncaught_exception

unexpected (CRT)

ungetc, ungetwc

_ungetc_nolock, _ungetwc_nolock

_ungetch, _ungetwch, _ungetch_nolock, _ungetwch_nolock

_unlink, _wunlink

_utime, _utime32, _utime64, _wutime, _wutime32, _wutime64

va_arg, va_copy, va_end, va_start

_vcprintf, _vcprintf_l, _vcwprintf, _vcwprintf_l

_vcprintf_p, _vcprintf_p_l, _vcwprintf_p, _vcwprintf_p_l

_vcprintf_s, _vcprintf_s_l, _vcwprintf_s, _vcwprintf_s_l

vfprintf, _vfprintf_l, vfwprintf, _vfwprintf_l

_vfprintf_p, _vfprintf_p_l, _vfwprintf_p, _vfwprintf_p_l

vfprintf_s, _vfprintf_s_l, vfwprintf_s, _vfwprintf_s_l

vprintf Functions

vprintf, _vprintf_l, vwprintf, _vwprintf_l

_vprintf_p, _vprintf_p_l, _vwprintf_p, _vwprintf_p_l

vprintf_s, _vprintf_s_l, vwprintf_s, _vwprintf_s_l

_vscprintf, _vscprintf_l, _vscwprintf, _vscwprintf_l

_vscprintf_p, _vscprintf_p_l, _vscwprintf_p, _vscwprintf_p_l

vsnprintf, _vsnprintf, _vsnprintf_l, _vsnwprintf, _vsnwprintf_l

vsnprintf_s, _vsnprintf_s, _vsnprintf_s_l, _vsnwprintf_s, _vsnwprintf_s_l

vsprintf, _vsprintf_l, vswprintf, _vswprintf_l, __vswprintf_l

_vsprintf_p, _vsprintf_p_l, _vswprintf_p, _vswprintf_p_l

vsprintf_s, _vsprintf_s_l, vswprintf_s, _vswprintf_s_l

wcstombs, _wcstombs_l

wcstombs_s, _wcstombs_s_l

wctomb, _wctomb_l

wctomb_s, _wctomb_s_l

See Also

Other Resources

C Run-Time Library Reference