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#include <wctype.h> wctype_t wctype(const char *name);
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(3) classification function "alpha" - realizes the isalpha(3) classification function "blank" - realizes the isblank(3) classification function "cntrl" - realizes the iscntrl(3) classification function "digit" - realizes the isdigit(3) classification function "graph" - realizes the isgraph(3) classification function "lower" - realizes the islower(3) classification function "print" - realizes the isprint(3) classification function "punct" - realizes the ispunct(3) classification function "space" - realizes the isspace(3) classification function "upper" - realizes the isupper(3) classification function "xdigit" - realizes the isxdigit(3) classification function