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Visual Studio 2005
Visual Studio
Visual C++
Reference
Libraries Reference
Run-Time Library
Alphabetical Function Reference
__isascii, iswascii
__max
__min
__toascii
abort
abs, _abs64
access
_access, _waccess
_access_s, _waccess_s
acos, acosf
_aligned_free
_aligned_malloc
_aligned_offset_malloc
_aligned_offset_realloc
_aligned_offset_recalloc
_aligned_realloc
_aligned_recalloc
_alloca
asctime, _wasctime
asctime_s, _wasctime_s
asin, asinf
assert
_ASSERT, _ASSERTE Macros
atan, atanf, atan2, atan2f
atexit
_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: _y0, _y1, _yn
Bessel Functions: _j0, _j1, _jn
bsearch
bsearch_s
btowc
_byteswap_uint64, _byteswap_ulong, _byteswap_ushort
cabs
_cabs
calloc
_calloc_dbg
ceil, ceilf
_cexit, _c_exit
cgets
_cgets, _cgetws
_cgets_s, _cgetws_s
chdir
_chdir, _wchdir
_chdrive
_chgsign, _chgsignl
chmod
_chmod, _wchmod
chsize
_chsize
_chsize_s
_clear87, _clearfp
clock
clearerr
clearerr_s
close
_close
_commit
_configthreadlocale
_control87, _controlfp, __control87_2
_controlfp_s
_copysign, _copysignl
cos, cosf, cosh, coshf
_countof Macro
cprintf
_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
_cputs, _cputws
creat
_creat, _wcreat
_create_locale
_CrtCheckMemory
_CrtDbgBreak
_CrtDbgReport, _CrtDbgReportW
_CrtDoForAllClientObjects
_CrtDumpMemoryLeaks
_CrtGetAllocHook
_CrtGetDumpClient
_CrtGetReportHook
_CrtIsMemoryBlock
_CrtIsValidHeapPointer
_CrtIsValidPointer
_CrtMemCheckpoint
_CrtMemDifference
_CrtMemDumpAllObjectsSince
_CrtMemDumpStatistics
_CrtReportBlockType
_CrtSetAllocHook
_CrtSetBreakAlloc
_CrtSetDbgFlag
_CrtSetDebugFillThreshold
_CrtSetDumpClient
_CrtSetReportFile
_CrtSetReportHook
_CrtSetReportHook2, _CrtSetReportHookW2
_CrtSetReportMode
cscanf
_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
cwait
_cwait
difftime, _difftime32, _difftime64
div
dup, dup2
_dup, _dup2
_dupenv_s, _wdupenv_s
_dupenv_s_dbg, _wdupenv_s_dbg
ecvt
_ecvt
_ecvt_s
_endthread, _endthreadex
eof
_eof
_exec, _wexec Functions
execl
_execl, _wexecl
execle
_execle, _wexecle
execlp
_execlp, _wexeclp
execlpe
_execlpe, _wexeclpe
execv
_execv, _wexecv
execve
_execve, _wexecve
execvp
_execvp, _wexecvp
execvpe
_execvpe, _wexecvpe
exit, _exit
exp, expf
_expand
_expand_dbg
fabs, fabsf
fclose, _fcloseall
_fclose_nolock
fcloseall
fcvt
_fcvt
_fcvt_s
fdopen
_fdopen, _wfdopen
feof
ferror
fflush
_fflush_nolock
fgetc, fgetwc
_fgetc_nolock, _fgetwc_nolock
fgetchar
_fgetchar, _fgetwchar
fgetpos
fgets, fgetws
filelength
_filelength, _filelengthi64
fileno
_fileno
_find, _wfind Functions
_findclose
_findfirst, _wfindfirst
_findnext, _wfindnext
_finite
Flag Directives
floor, floorf
flushall
_flushall
fmod, fmodf
fopen, _wfopen
fopen_s, _wfopen_s
Format Specification Fields: printf and wprintf Functions
Format Specification Fields: scanf and wscanf Functions
_fpclass
_fpieee_flt
_fpreset
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, fputwc
_fputc_nolock, _fputwc_nolock
fputchar
_fputchar, _fputwchar
fputs, fputws
fread
_fread_nolock
free
_free_dbg
_free_locale
_freea
freopen, _wfreopen
freopen_s, _wfreopen_s
frexp
fscanf, _fscanf_l, fwscanf, _fwscanf_l
fscanf_s, _fscanf_s_l, fwscanf_s, _fwscanf_s_l
fseek, _fseeki64
_fseek_nolock, _fseeki64_nolock
fsetpos
_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
fwide
fwrite
_fwrite_nolock
gcvt
_gcvt
_gcvt_s
_get_amblksiz
_get_current_locale
_get_daylight
_get_doserrno
_get_dstbias
_get_errno
_get_fileinfo
_get_fmode
_get_heap_handle
_get_osfhandle
_get_osplatform
_get_osver
_get_output_format
_get_pgmptr
_get_printf_count_output
_get_sbh_threshold
_get_terminate
_get_timezone
_get_tzname
_get_unexpected
_get_winmajor
_get_winminor
_get_winver
_get_wpgmptr
getc, getwc
_getc_nolock, _getwc_nolock
getch
_getch, _getwch
_getch_nolock, _getwch_nolock
getchar, getwchar
_getchar_nolock, _getwchar_nolock
getche
_getche, _getwche
_getche_nolock, _getwche_nolock
getcwd
_getcwd, _wgetcwd
_getcwd_dbg, _wgetcwd_dbg
_getdcwd, _wgetdcwd
_getdcwd_dbg, _wgetdcwd_dbg
_getdcwd_nolock, _wgetdcwd_nolock
_getdiskfree
_getdrive
_getdrives
getenv, _wgetenv
getenv_s, _wgetenv_s
_getmaxstdio
_getmbcp
getpid
_getpid
gets, _getws
gets_s, _getws_s
getw
_getw
gmtime, _gmtime32, _gmtime64
_gmtime_s, _gmtime32_s, _gmtime64_s
_heapadd
_heapchk
_heapmin
_heapset
_heapwalk
hypot
_hypot, hypotf
inp, inpw
_inp, _inpw, _inpd
is, isw Routines
isalpha, iswalpha, _isalpha_l, _iswalpha_l
isalnum, iswalnum, _isalnum_l, _iswalnum_l
isascii
isatty
_isatty
iscntrl, iswcntrl, _iscntrl_l, _iswcntrl_l
_isctype, iswctype, _isctype_l, _iswctype_l
iscsym, iscsymf
__iscsym, __iswcsym, __iscsymf, __iswcsymf, _iscsym_l, _iswcsym_l, _iscsymf_l, _iswcsymf_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_, _ismbcdigit, _ismbcdigit_l
_ismbcgraph, _ismbcgraph_l, _ismbcprint, _ismbcprint_l, _ismbcpunct, _ismbcpunct_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
_isnan
isxdigit, iswxdigit, _isxdigit_l, _iswxdigit_l
isupper, _isupper_l, iswupper, _iswupper_l
isspace, iswspace, _isspace_l, _iswspace_l
ispunct, iswpunct, _ispunct_l, _iswpunct_l
isprint, iswprint, _isprint_l, _iswprint_l
itoa
_itoa, _i64toa, _ui64toa, _itow, _i64tow, _ui64tow
_itoa_s, _i64toa_s, _ui64toa_s, _itow_s, _i64tow_s, _ui64tow_s
j0, j1, jn
kbhit
_kbhit
labs
ldexp
ldiv
lfind
_lfind
_lfind_s
localeconv
localtime, _localtime32, _localtime64
localtime_s, _localtime32_s, _localtime64_s
_lock_file
locking
_locking
log, logf, log10, log10f
_logb
longjmp
_lrotl, _lrotr
lsearch
_lsearch
_lsearch_s
lseek
_lseek, _lseeki64
ltoa
_ltoa, _ltow
_ltoa_s, _ltow_s
_makepath, _wmakepath
_makepath_s, _wmakepath_s
malloc
_malloc_dbg
_malloca
_matherr
_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
mbrlen
mbrtowc
_mbsbtype, _mbsbtype_l
_mbsdec, _mbsdec_l, _strdec, _wcsdec
_mbsinc, _mbsinc_l, _strinc, _wcsinc
mbsinit
_mbsnbcat, _mbsnbcat_l
_mbsnbcat_s, _mbsnbcat_s_l
_mbsnbcmp, _mbsnbcmp_l
_mbsnbcnt, _mbsnbcnt_l, _mbsnccnt, _mbsnccnt_l, _strncnt, _wcsncnt
_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
_mbsnextc, _mbsnextc_l, _strnextc, _wcsnextc
_mbsninc, _mbsninc_l, _strninc, _wcsninc
_mbsspnp, _mbsspnp_l, _strspnp, _wcsspnp
mbsrtowcs
mbsrtowcs_s
mbstowcs, _mbstowcs_l
mbstowcs_s, _mbstowcs_s_l
mbtowc, _mbtowc_l
memccpy
_memccpy
memchr, wmemchr
memcmp, wmemcmp
memcpy, wmemcpy
memcpy_s, wmemcpy_s
memicmp
_memicmp, _memicmp_l
memmove, wmemmove
memmove_s, wmemmove_s
memset, wmemset
mkdir
_mkdir, _wmkdir
_mkgmtime, _mkgmtime32, _mkgmtime64
mktemp
_mktemp, _wmktemp
_mktemp_s, _wmktemp_s
mktime, _mktime32, _mktime64
modf, modff
_msize
_msize_dbg
_nextafter
offsetof
_onexit, _onexit_m
open
_open, _wopen
_open_osfhandle
operator new[]
operator new
operator delete[]
operator delete
outp, outpw
_outp, _outpw, _outpd
_pclose
perror, _wperror
_pipe
_popen, _wpopen
pow, powf
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, putwc
_putc_nolock, _putwc_nolock
putch
_putch, _putwch
_putch_nolock, _putwch_nolock
putchar, putwchar
_putchar_nolock, _putwchar_nolock
putenv
_putenv, _wputenv
_putenv_s, _wputenv_s
puts, _putws
putw
_putw
_query_new_handler
_query_new_mode
qsort
qsort_s
raise
rand
rand_s
read
_read
realloc
_realloc_dbg
_recalloc
_recalloc_dbg
remove, _wremove
rename, _wrename
_resetstkoflw
rewind
rmdir
_rmdir, _wrmdir
rmtmp
_rmtmp
_rotl, _rotl64, _rotr, _rotr64
_RPT, _RPTF, _RPTW, _RPTFW Macros
_RTC_GetErrDesc
_RTC_NumErrors
_RTC_SetErrorFunc
_RTC_SetErrorFuncW
_RTC_SetErrorType
_scalb
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_amblksiz
_set_controlfp
_set_doserrno
_set_errno
_set_error_mode
_set_fileinfo
_set_fmode
_set_invalid_parameter_handler
_set_new_handler
_set_new_mode
_set_output_format
_set_printf_count_output
_set_purecall_handler, _set_purecall_handler_m
_set_sbh_threshold
_set_SSE2_enable
_set_se_translator
set_terminate
set_unexpected
setbuf
setjmp
setlocale, _wsetlocale
_setmaxstdio
_setmbcp
setmode
_setmode
setvbuf
signal
sin, sinf, sinh, sinhf
Size and Distance 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
_sopen, _wsopen
_sopen_s, _wsopen_s
_spawn, _wspawn Functions
spawnl
_spawnl, _wspawnl
spawnle
_spawnle, _wspawnle
spawnlp
_spawnlp, _wspawnlp
spawnlpe
_spawnlpe, _wspawnlpe
spawnv
_spawnv, _wspawnv
spawnve
_spawnve, _wspawnve
spawnvp
_spawnvp, _wspawnvp
spawnvpe
_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
srand
sscanf, _sscanf_l, swscanf, _swscanf_l
sscanf_s, _sscanf_s_l, swscanf_s, _swscanf_s_l
_stat, _wstat Functions
_status87, _statusfp, _statusfp2
strcat, wcscat, _mbscat
strcat_s, wcscat_s, _mbscat_s
strchr, wcschr, _mbschr, _mbschr_l
strcmp, wcscmp, _mbscmp
strcmpi
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
strdup, wcsdup
_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
String to Numeric Value Functions
strlen, strlen_l, wcslen, wcslen_l, _mbslen, _mbslen_l, _mbstrlen, _mbstrlen_l
strlwr, wcslwr
_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
_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
strnicmp, wcsnicmp
_strnicmp, _wcsnicmp, _mbsnicmp, _strnicmp_l, _wcsnicmp_l, _mbsnicmp_l
_strnicoll, _wcsnicoll, _mbsnicoll, _strnicoll_l, _wcsnicoll_l, _mbsnicoll_l
strnlen, strnlen_l, wcsnlen, wcsnlen_l, _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
_strrev, _wcsrev, _mbsrev, _mbsrev_l
strset, wcsset
_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
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
strtoul, _strtoul_l, wcstoul, _wcstoul_l
_strtoui64, _wcstoui64, _strtoui64_l, _wcstoui64_l
strupr, wcsupr
_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
swab
_swab
system, _wsystem
tan, tanf, tanh, tanhf
tell
_tell, _telli64
tempnam
_tempnam, _wtempnam, tmpnam, _wtmpnam
_tempnam_dbg, _wtempnam_dbg
terminate
time, _time32, _time64
tmpfile
tmpfile_s
tmpnam_s, _wtmpnam_s
to Functions
toascii
tolower, _tolower, towlower, _tolower_l, _towlower_l
toupper, _toupper, towupper, _toupper_l, _towupper_l
towctrans
tzset
_tzset
ultoa
_ultoa, _ultow
_ultoa_s, _ultow_s
umask
_umask
_umask_s
unexpected
ungetc, ungetwc
_ungetc_nolock, _ungetwc_nolock
ungetch
_ungetch, _ungetwch, _ungetch_nolock, _ungetwch_nolock
unlink
_unlink, _wunlink
_unlock_file
_utime, _utime32 _utime64, _wutime, _wutime32, _wutime64
va_arg, 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
wcrtomb
wcrtomb_s
wcsrtombs
wcsrtombs_s
wcstombs, _wcstombs_l
wcstombs_s, _wcstombs_s_l
wctob
wctomb, _wctomb_l
wctomb_s, _wctomb_s_l
wctrans
wctype
write
_write
wcsicoll
y0, y1, yn
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_set_errno 

Visual Studio 2005

Set the value of the errno global variable.

Copy 

errno_t _set_errno( 
   int value 
);

Parameters

[in] value

The new value of errno.

Returns zero if successful.

Possible values are defined in Errno.h. Also, see errno Constants.

Copy 
// crt_set_errno.c
#include <stdio.h>
#include <errno.h>

int main()
{
   _set_errno( EILSEQ );
   perror( "Oops" );
}

Output

Oops: Illegal byte sequence
Routine Required header Optional header Compatibility

_set_errno

<stdlib.h>

<errno.h>

Windows 95, Windows 98, Windows 98 Second Edition, Windows Millennium Edition, Windows NT 4.0, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003

For more compatibility information, see Compatibility in the Introduction.

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