C++ :: Input From User A Positive Number N And Find Its Factorial

Write a C++ program that will input from the user a positive number n and find its factorial. Don’t forget to validate the input. The factorial of a positive integer n (denoted by n!) is defines as the product of the integers from 1 to n.

n! = 1* 2 * 3 * ... * (n - 1) * n

You should allow the user to continue working with your program for additional data sets.

Sample output:

Please enter a number: 5
5! = 120
Would you like to continue (Y/N)?Y
Please enter a number: 3
3! = 6

Would you like to continue (Y/N)?N
Good Bye!!

My code for what i think I'm doing is as follows:

#include <iostream>
using namespace std;
int main(){
int i=1;
int n;

[Code] ....