iswxdigit

Header file:

    wctype.h

Synopsis:

    int iswxdigit(wint_t input)

Description:

    Return non-zero if the given  input is a hexadecimal digit.  Otherise it returns 0.

Sample program for isxdigit in C:

---

  #include <stdio.h>

  #include <wchar.h>

  #include <wctype.h>

  int main() {

        wint_t wide_char;

        char input;

        printf("Enter your input:");

        input = getchar();

        /* mbtowc -converts single byte to wide character format */

        wide_char = btowc(input);

        if (iswxdigit(wide_char))

                printf("It is a hexadecimal digit\n");

        else

                printf("It is not a hexadecimal digit\n");

        printf("Return value: %d\n", iswxdigit(wide_char));

        return 0;

  }

  Output:

  Enter your input:A
  It is a hexadecimal digit
  Return value: 4096