using System;

using System.Threading;

public class Program

{

    public static void disp(int num)

    {

​

        try

        {

            Console.WriteLine(num);

            Thread.Sleep(500);

        }

        catch (Exception e)

        {

            Console.WriteLine("ERROR");

        }

​

        Console.WriteLine("Done");

    }

    public static void disp1()

    {

        disp(1);

    }

    public static void Main()

    {

        ThreadStart ts1 = new ThreadStart(disp1);

            Thread t = new Thread(ts1);

            t.Start();

​

    }

}