#include <iostream.h>
#include "bigint.h"

BigInt fact(int n)
// postcondition: return n!
{
    BigInt result(1);
	
    int k;
    for(k=1; k <= n; k++)
    {
        // result *= k;
        result = result * k;
    }
	
    return result;
}

int main()
{
    BigInt b;
    int k,first,last;
	
    cout << "enter first last numbers for factorial: ";
    cin >> first >> last;
	
    for(k=first; k <= last; k++)
    {
	b = fact(k);
		
	cout << k << "! = \t" << b << endl;
    }
	
    return 0;
}