wctype - wide-character classification

       For an explanation of the terms used in this section, see attributes(7).
       ┌──────────────────────────────────────────────────────────────────────┬───────────────┬────────────────┐
       │ Interface                                                            │ Attribute     │ Value          │
       ├──────────────────────────────────────────────────────────────────────┼───────────────┼────────────────┤
       │ wctype()                                                             │ Thread safety │ MT-Safe locale │
       └──────────────────────────────────────────────────────────────────────┴───────────────┴────────────────┘

       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(3)
       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(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

       POSIX.1-2001, C99.

       Standard C library (libc, -lc)

       wctype - wide-character classification

       The behavior of wctype() depends on the LC_CTYPE category of the current locale.

       The wctype() function returns a property  descriptor  if  the  name  is  valid.   Otherwise,  it  returns
       (wctype_t)0.

iswctype(3)

Linux man-pages 6.9.1                              2024-05-02                                          wctype(3)

       C11, POSIX.1-2008.

#include<wctype.h>wctype_twctype(constchar*name);