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wctype

Determines a classification rule for wide-character codes.

wctype_t wctype(
   const char * property 
);

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

wctype

<wctype.h>

For additional compatibility information, see Compatibility in the Introduction.

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