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wctype

Determines a classification rule for wide-character codes.

Syntax

wctype_t wctype(
   const char * property
);

Parameters

property
Property string.

Return value

If the LC_CTYPE category of the current locale doesn't 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 more 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" ))

Requirements

Routine Required header
wctype <wctype.h>

For more compatibility information, see Compatibility.

See also

Data conversion
setlocale, _wsetlocale