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wctype ? wide character classification |
#include <wctype.h> wctype_t wctype (const char *name); |
The wctype_t type represents a property which a wide character may or may not have. In other words, it represents a class of wide characters. This type’s nature is implementation dependent, but the special value (wctype_t)0 denotes an invalid property. Nonzero wctype_t values can be passed to the iswctype function to actually test whether a given wide character has the property. The wctype function returns a property, given by its name. The set of valid names depends on the LC_CTYPE category of the current locale, but the following names are valid in all locales. "alnum" - realizes the isalnum classification function "alpha" - realizes the isalpha classification function "blank" - realizes the isblank classification function "cntrl" - realizes the iscntrl classification function "digit" - realizes the isdigit classification function "graph" - realizes the isgraph classification function "lower" - realizes the islower classification function "print" - realizes the isprint classification function "punct" - realizes the ispunct classification function "space" - realizes the isspace classification function "upper" - realizes the isupper classification function "xdigit" - realizes the isxdigit classification function |
The wctype function returns a property descriptor if the name is valid. Otherwise it returns (wctype_t)0. |
ISO/ANSI C, UNIX98 |
iswctype(3) |
The behaviour of wctype depends on the LC_CTYPE category of the current locale. |