How to Find Factorial Using C#

            How to Find Factorial  Using C#

using System;
namespace FactorialDemo
{
    class Program
    {
        static void Main(string[] args)
        {
            int iCount, iUserNumber, iFact;
            Console.WriteLine("Please Enter A Number For Finding Factorial ");
            iUserNumber = Convert.ToInt32(Console.ReadLine());
            iFact = iUserNumber;
            for (iCount = iUserNumber  - 1; iCount >= 1; iCount--)
            {
                iFact = iFact * iCount;
            }
            Console.WriteLine("Factorial of Entered Number {0}", iFact);
            Console.ReadLine();
        }
    }
}