wctype
Determines a classification rule for wide-character codes.
wctype_t wctype( const char * property );
Parameters
- property
- Property string.
Return Value
If the LC_CTYPE category of the current locale does not define a classification rule whose name matches the property string property, the function returns zero. Otherwise, it returns a nonzero value suitable for use as the second argument to a subsequent call to towctrans.
Remarks
The function determines a classification rule for wide-character codes. The following pairs of calls have the same behavior in all locales (but an implementation can define additional classification rules even in the "C" locale):
iswalnum( c ) same as iswctype( c, wctype( "alnum" ) )
iswalpha( c ) same as iswctype( c, wctype( "alpha" ) )
iswcntrl( c ) same as iswctype( c, wctype( "cntrl" ) )
iswdigit( c ) same as iswctype( c, wctype( "digit" ) )
iswgraph( c ) same as iswctype( c, wctype( "graph" ) )
iswlower( c ) same as iswctype( c, wctype( "lower" ) )
iswprint( c ) same as iswctype( c, wctype( "print" ) )
iswpunct( c ) same as iswctype( c, wctype( "punct" ) )
iswspace( c ) same as iswctype( c, wctype( "space" ) )
iswupper( c ) same as iswctype( c, wctype( "upper" ) )
iswxdigit( c ) same as iswctype( c, wctype( "xdigit" ) )
Requirements
| Routine | Required header | Compatibility |
|---|---|---|
| wctype | <wctype.h> | Win 98, Win Me, Win NT, Win 2000, Win XP |
For additional compatibility information, see Compatibility in the Introduction.
Libraries
All versions of the C run-time libraries.
See Also
Data Conversion Routines | setlocale | Run-Time Routines and .NET Framework Equivalents
