using System;           

public class Program

{

    public static void Main()

    {

    int n;

        while(true)

      { 

        try

        {

     Console.Write("Enter even number: ");

     n = int.Parse(Console.ReadLine()); 

     if(n % 2 != 0)

     {  

       Console.Write("Enter even number: ");

       n = int.Parse(Console.ReadLine());

     }

            else break;

        }

            catch{Console.WriteLine("Invalid number entered!");}

        }   

         Console.WriteLine("Even number entered: {0}", n);

    }

    }