toascii-toascii.md

description	title	ms.date	api_name	api_location	api_type	topic_type	f1_keywords	helpviewer_keywords	ms.assetid
Learn more about: toascii, __toascii	toascii, __toascii	11/04/2016	__toascii	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-convert-l1-1-0.dll	DLLExport	apiref	CTYPE/toascii CTYPE/__toascii __toascii toascii	toascii function string conversion, to ASCII characters __toascii function ASCII characters, converting to	a07c0608-b0e2-4da2-a20c-7b64d6a9b77c

toascii, __toascii

Converts characters to 7-bit ASCII by truncation.

Syntax

int __toascii(
   int c
);
#define toascii __toascii

Parameters

c
Character to convert.

Return value

__toascii converts the value of c to the 7-bit ASCII range and returns the result. There's no return value reserved to indicate an error.

Remarks

The __toascii routine converts the given character to an ASCII character by truncating it to the low-order 7 bits. No other transformation is applied.

The __toascii routine is defined as a macro unless the preprocessor macro _CTYPE_DISABLE_MACROS is defined. For backward compatibility, toascii is defined as a macro only when __STDC__ isn't defined or is defined as 0; otherwise it's undefined.

Requirements

Routine	Required header
toascii, __toascii	C: <ctype.h> C++: <cctype> or <ctype.h>

The toascii macro is a POSIX extension, and __toascii is a Microsoft-specific implementation of the POSIX extension. For more compatibility information, see Compatibility.

See also

Data conversion
is, isw routines
to functions