_isctype, iswctype, _isctype_l, _iswctype_l
Tests c for the ctype property specified by the desc argument. For each valid value of desc, there is an equivalent wide-character classification routine.
int _isctype( int c, _ctype_t desc ); int _isctype_l( int c, _ctype_t desc, _locale_t locale ); int iswctype( wint_t c, wctype_t desc ); int _iswctype_l( wint_t c, wctype_t desc, _locale_t locale );
Integer to test.
Property to test for. This is normally retrieved using ctype or wctype.
The locale to use for any locale-dependent tests.
_isctype and iswctype return a nonzero value if c has the property specified by desc in the current locale or 0 if it does not. The versions of these functions with the _l suffix are identical except that they use the locale passed in instead of the current locale for their locale-dependent behavior. For more information, see Locale.
The behavior of _isctype and _isctype_l is undefined if c is not EOF or in the range 0 through 0xFF, inclusive. When a debug CRT library is used and c is not one of these values, the functions raise an assertion.
Generic-Text Routine Mappings
|Tchar.h routine||_UNICODE and _MBCS not defined||_MBCS defined||_UNICODE defined|
By default, this function's global state is scoped to the application. To change this, see Global state in the CRT.
|iswctype||<ctype.h> or <wchar.h>|
|_iswctype_l||<ctype.h> or <wchar.h>|
For more compatibility information, see Compatibility.
All versions of the C run-time libraries.