/******************************************************/
/* Introduction to Programming                        */
/* By Dr. ANTF                                        */
/* www.antf.net                                       */
/* Copyright 2015                                     */
/*                                                    */
/* C# 317 - Problem 16: Factorial                     */
/******************************************************/

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace DOS
{
    class Program
    {
        static void Main(string[] args)
        {
            int n, mul = 1;
            Console.Write("Please enter a number: ");
            n = int.Parse(Console.ReadLine());

            for (int i = 1; i <= n; i++) mul = mul * i;

            Console.WriteLine("\n{0}! = {1}", n, mul);
            Console.ReadKey();
        }
    }
}