iswctype

Indicates if a wide character has a specified property.

Format

#include  <wctype.h> (ISO C)

#include  <wchar.h> (XPG4)

int iswctype  (wint_t wc, wctype_t wc_prop);

Arguments

wc

An object of type wint_t. The value of wc must be representable as a valid wide-character code in the current locale, or must equal the value of the macro WEOF. If it has any other value, the behavior is undefined.

wc_prop

A valid property name in the current locale. This is set up by calling the wctype function.

Description

See also wctype in this section.

Return Values

nonzero	If the character has the property wc_prop.
0	If the character does not have the property wc_ prop.

Example

#include <locale.h>
#include <wchar.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

/* This test will set up the "upper" character class using wctype()  */
/* and then verify whether the character 'a' and 'A' are             */
/* members of this class                                             */

#include <stdlib.h>

main()
{

wchar_t w_char1, w_char2;
wctype_t ret_val;

char *char1 = "a";
char *char2 = "A";

    ret_val = wctype("upper");

    /* Convert char1 to wide-character format - w_char1 */

    if (mbtowc(&w_char1, char1, 1) == -1)
        {
        perror("mbtowc");
        exit(EXIT_FAILURE);
        }

    if (iswctype((wint_t)w_char1, ret_val))
        printf("[%C] is a member of the character class upper\n",w_char1);
    else
        printf("[%C] is not a member of the character class upper\n",w_char1);

    /* Convert char2 to wide-character format - w_char2 */

    if (mbtowc(&w_char2, char2, 1) == -1)
        {
        perror("mbtowc");
        exit(EXIT_FAILURE);
        }

    if (iswctype((wint_t)w_char2, ret_val))
        printf("[%C] is a member of the character class upper\n",w_char2);
    else
        printf("[%C] is not a member of the character class upper\n",w_char2);

}

Running the example program produces the following result:

[a] is not a member of the character class upper
[A] is a member of the character class upper