C# factotial program

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

namespace factorial
{
    class Program
    {
        static void Main(string[] args)
        {
                        int num, i, fact = 1;
            //clrscr();
            Console.WriteLine("\n >>C# PROGRAM TO FIND FACTORIAL OF GIVEN NUMBER <<\n");
            Console.Write("\n Enter the Number whose Factorial you want: ");
            num=Convert.ToInt32(Console.ReadLine());
            for (i = num; i >= 2; i--) //i is intializing with num value and  is decremented till 2
            {
                fact = fact * i; //fact is updating with changing value of i
            }

            Console.WriteLine("\n The factorial of {0} is {1}.\n\n", num, fact);
            Console.ReadLine();
        }
        }
    }

Output: