/**
 *     $Id: urandom.c,v 1.1.1.1 2008-04-28 17:32:53 mbroeker Exp $
 * $Source: /development/c/demos/urandom.c,v $
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>

int compare (unsigned char *a, unsigned char *b)
{
    if (*a > *b)
        return 1;
    return -1;
}

int main (int argc, char **argv)
{
    int i;
    int elements;
    int fd;
    unsigned char numbers[256] = { 0 };

    fd = open ("/dev/urandom", O_RDONLY);
    if (fd == -1)
        return EXIT_FAILURE;

    elements = read (fd, numbers, 255);
    numbers[elements] = 0;

    qsort (numbers, elements, sizeof (unsigned char), (void *)&compare);

    for (i = 0; i < elements; i++) {
        printf ("Number: %d\n", numbers[i]);
    }

    close (fd);
    return EXIT_SUCCESS;
}