/**************************************************************************
 *
 * Purpose: generate the factorial of a number by iteration.
 * Author:  M. J. Leslie
 * Date:    09-Apr-94
 *
 **************************************************************************/

#include <stdio.h>

int factorial(int num);

main()
{
    int num;
    puts  ("This program will return the factorial of a number.");
    printf("Please enter the number ==> " );
    scanf("%d", &num);

    printf(" %d! is %d\n",num, factorial(num) );
}

int factorial(int num)
{
    int count;
    int ans=1;
  
    for (count=1 ; count <= num; count++ ) 
    {
    	ans *= count;
    }
    
    return ans;
}