#include <stdio.h>
#include <string.h>
/**
 * Terry Harvey CIS 105 Section 010 TA Tina Weymouth
 *  Demonstration program
 **/
int fact(int n);
int main(int argc, char * argv[]){

    int n = atoi(argv[1]);

    printf("fact of n is %d\n", fact(n));
    return 0;

}

int fact(int n){
    if (n == 1)
        return 1;
    else
        return n * fact(n - 1);
}