#include <stdlib.h>

#include <stdio.h>

#include <wchar.h>

#include <errno.h>

#include <limits.h>



/*

 * This test calls wcstoul() to convert a string to an

 * unsigned long integer. wcstoul outputs the resulting

 * integer and any characters that could not be converted. 

 */



#define MAX_STRING 128



main() {

    int base = 10,

        errno;

    char *input_string = "1234.56";

    wchar_t string_array[MAX_STRING],

           *ptr;

    size_t size;

    unsigned long int val;

    

    printf("base = [%d]\n", base);

    printf("String to convert = %s\n", input_string);

    

    if ((size = mbstowcs(string_array, input_string, MAX_STRING)) == (size_t)-1) {

        perror("mbstowcs");

        exit(-1);

    }

    

    printf("wchar_t string is = [%S]\n", string_array);



    errno = 0;

    val = wcstoul(string_array, &ptr, base);

    

    if (errno == 0) {

      printf("returned unsigned long int from wcstoul = [%u]\n", val);

      printf("wide char terminating scan(ptr) = [%S]\n\n", ptr);

    }

    

    if (errno == ERANGE) {

        perror("error value is :");

        printf("ULONG_MAX = [%u]\n", ULONG_MAX);

        printf("wcstoul failed, val = [%d]\n\n", val);

    }

  

    return (0);

}