obsolete-functions.md

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Obsolete functions	Lists the obsolete functions that have been deprecated and removed from the Microsoft C runtime library (CRT).	4/2/2020	_beep _sleep _loaddll _getdllprocaddr _seterrormode is_wctype _getsystime _setsystime _unloaddll _o__beep _o__getdllprocaddr _o__getsystime _o__loaddll _o__seterrormode _o__setsystime _o__sleep _o__unloaddll _o_is_wctype	msvcrt.dll msvcr80.dll msvcr90.dll msvcr100.dll msvcr100_clr0400.dll msvcr110.dll msvcr110_clr0400.dll msvcr120.dll msvcr120_clr0400.dll ucrtbase.dll api-ms-win-crt-process-l1-1-0.dll api-ms-win-crt-runtime-l1-1-0.dll api-ms-win-crt-string-l1-1-0.dll api-ms-win-crt-time-l1-1-0.dll	DLLExport	apiref	is_wctype _loaddll _unloaddll _getdllprocaddr _seterrormode _beep _sleep _getsystime corecrt_wctype/is_wctype process/_loaddll process/_unloaddll process/_getdllprocaddr stdlib/_seterrormode stdlib/_beep stdlib/_sleep time/_getsystime time/_setsystime	obsolete functions _beep function _sleep function _seterrormode function	8e14c2d4-1481-4240-8586-47eb43db02b0

Obsolete functions

Certain library functions are obsolete and have more recent equivalents. We recommend you change these functions to the updated versions. Other obsolete functions have been removed from the CRT. This article lists the functions deprecated as obsolete, and the functions removed in a particular version of Visual Studio.

Deprecated as obsolete in Visual Studio 2015

Obsolete function	Alternative
is_wctype	iswctype
_loaddll	LoadLibrary, LoadLibraryEx, or LoadPackagedLibrary
_unloaddll	FreeLibrary
_getdllprocaddr	GetProcAddress
_seterrormode	SetErrorMode
_beep	Beep
_sleep	Sleep
_getsystime	GetLocalTime
_setsystime	SetLocalTime

Removed from the CRT in Visual Studio 2015

Obsolete function	Alternative
_cgets, _cgetws	_cgets_s, _cgetws_s
gets, _getws	gets_s, _getws_s
_get_output_format	None
_heapadd	None
_heapset	None
inp, inpw, _inp, _inpw, _inpd	None
outp, outpw, _outp, _outpw, _outpd	None
_set_output_format	None

Removed from the CRT in earlier versions of Visual Studio

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