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The latest version of this topic can be found at 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 is 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__ is not defined or is defined as 0; otherwise it is 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 additional compatibility information, see Compatibility in the Introduction.