wctype
Determines a classification rule for wide-character codes.
wctype_t wctype( const char * property );
Parameters
- property
-
Property string.
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.
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):
| Function | Same as |
|---|---|
| iswalnum( c ) | iswctype( c , wctype( "alnum" ) ) |
| iswalpha( c ) | iswctype( c , wctype( "alpha" ) ) |
| iswcntrl( c ) | iswctype( c , wctype( "cntrl" ) ) |
| iswdigit( c ) | iswctype( c , wctype( "digit" ) ) |
| iswgraph( c ) | iswctype( c , wctype( "graph" ) ) |
| iswlower( c ) | iswctype( c , wctype( "lower" ) ) |
| iswprint( c ) | iswctype( c , wctype( "print" ) ) |
| iswpunct( c ) | iswctype( c , wctype( "punct" ) ) |
| iswspace( c ) | iswctype( c , wctype( "space" ) ) |
| iswupper( c ) | iswctype( c , wctype( "upper" ) ) |
| iswxdigit( c ) | iswctype( c , wctype( "xdigit" ) ) |
| Routine | Required header | Compatibility |
|---|---|---|
| wctype | <wctype.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 additional compatibility information, see Compatibility in the Introduction.
