using System;

​

public class Program

{

    public static void Main()

    {

        int Number = 0;

        int PreNumber = 1;

        int PreNumber2 = 0;

        int Sum = 0;

        int Counter = 1;

        while (Counter != 0)

        {

            Number = PreNumber + PreNumber2;

            Console.WriteLine("Number is " + Number);

            if (Number % 2 == 0)

            {

                Sum = Sum + Number;

                Console.WriteLine("Added");

                Counter++;

            }

​

            if (Number >= 4000000)

            {

                Console.WriteLine("Sum of " + Counter + " even numbers in the fibonacci sequence is " + Sum);

                Counter = 0;

            }

​

            PreNumber2 = PreNumber;

            PreNumber = Number;

        }

    }

}