wctype

Header file:

    wctype.h

Synopsis:

    wctype_t wctype(const char *property)

Description:

    It will provide the property descriptor based on the "property" value.  Some of the known properties are alnum, alpha, cntrl, digit, graph, lower, print, punct, space, upper, xdigit.

Return Value:

    returns a property descriptor on success. 0 on failure.

Sample Program for wctype in C:

---

  #include <stdio.h>
  #include <wchar.h>
  #include <wctype.h>
  int main() {
        wctype_t a;
        wint_t wide_char;
        char input;
        a = wctype("digit");
        printf("Enter your input:");
        input = getchar();

        /* btowc -Converts character to wide character format */
        wide_char = btowc(input);

        if (iswctype(wide_char, a))
                printf("It is a digit\n");
        else
                printf("It is not a digit\n");

        printf("Return value: %d\n", iswctype(wide_char, a));
        return 0;
  }

  Output:

  Enter your input:1
  It is a digit
  Return value: 1