C# Program - How to find factorial of a number in C# ?

Find factorial of a number in C#

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

    namespace FactorialNumber\_ForLoop
    {
        class Program
        {
            static void Main(string\[\] args)
            {
                int number, fact = 1;
                Console.WriteLine("Enter the number");
                number = int.Parse(Console.ReadLine());

                for (int i = number; i >=1; i--)
                {
                    fact = fact \* i;
                }
                Console.WriteLine("{0} Factorial is {1}",number,fact);
            }
        }
    }

Output: Enter the number 5 5 Factorial is 120