/*

 *     $Id: fak.c,v 1.1.1.1 2008-04-28 17:32:53 mbroeker Exp $

 * $Source: /development/c/demos/fak.c,v $

 */

#include <stdio.h>

#include <stdlib.h>

long fak (int i)

{

    if (i == 0)

        return 1;

    else if (i > 0)

        return (i * fak (i - 1));

    else

        return (i * fak (i + 1));

}

int main (int argc, char **argv)

{

    int number;

    printf ("Enter a number: ");

    if (scanf ("%d", &number) < 0) {

        printf ("READ ERROR\n");

        return EXIT_FAILURE;

    }

    printf ("The faktorial of %d is %ld\n", number, fak (number));

    return EXIT_SUCCESS;

}