HOw to Write Factorial in C#

C# is object oriented lanaguage it can be use to solve almost all Mathematics problems.
That is why some people found it difficult to understand. Moreover, It doesn't matter
you understand mathematics, since you perform some simple mathematics. On this Article we
will be teach our users how to code Factorial in C#, just follow the steps below:


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

namespace Even
{
    class Program
    {
        static void Main(string[] args)
        {
            double product = 1;
        int value;
        console.WriteLine("Enter Number");
        value = int.Parse(console.ReadLine());
        for (int a= 1; a<=value; a++)
            {

                product*=value;

            }

            Console.WriteLine(value+"!="+product);
            Console.ReadKey();
        }

    }