using System;

public class Program

{

    public static void Main()

    {   

        int iSum = 1;

        for(int i = 2; i <= 12 ; i=i+2)

        {

            iSum = iSum * i;

        }

        //[Code] Print the outcome variable.

        Console.WriteLine("Produc of even number: {0}",iSum);

        int iCounter = 1;

        int isum=0;

        while (iCounter < 4)

        {

            Console.WriteLine("Write a Number");

            int num = Convert.ToInt32(Console.ReadLine());

            isum=num+isum;

            iCounter++;

        }

        Console.WriteLine("Sum of your number is {0}", isum);

    }

}