#include <stdlib.h>

#include <limits.h>

#include <stdlib.h>

 

int main(void) {

    char    s[128];

    wchar_t *wc = (wchar_t *)malloc(8 * sizeof(wchar_t));

    int     n;

 

    setlocale(LC_ALL, "");

    wcscpy(wc, L"ABCDEF");

 

    if ((n = wctomb(s, wc)) == -1) {

        perror("wctomb failed");

        exit(-1);

    }

    

    printf("Bytes contained in multibyte character array: %d\n", n);

    return (0);

}