// Author:  Keith Shomper
// Date:    9/26/03
// Purpose: To demonstrate the while loop by computing a factorial


// ** WARNING ** This program as originally written has an error ** WARNING **

#include <iostream>

using namespace std;

int main() {
	int   N, originalN, factorial;

	// prompt the user for the value of N 
	cout << "What number would you like to compute the factorial for?  ";
	cin  >> N;

	// Save the value of N for the output
	originalN = N;

	// initialization of the loop can occur many ways, i.e., we can use the   
	// number N as our loop control variable and stop when it hits zero      I

	// computer the factorial    
	while (N > 0) { //                                                       T

		// combine the current number with the product we are building        E
		factorial *= N;

		// update N so we repeatedly use smaller and smaller values of N      M
		--N;
	}

	// Display the result
	cout << originalN << "! is " << factorial << endl;

	return 0;
}