using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Program Starts");

        Int32 fact = getFactorial(5);

        Console.WriteLine("Factorial : " + fact);

    }

    public static Int32 getFactorial(Int32 n)

    {

        Int32 i=n;

        Int32 sum = 1;

        while(i>0)

        {

            sum = sum*i;

            i--;

        }

        return sum;

    }

}