using System;

using System.Threading;

​

namespace LISTING_1_24_shared_flag_variable

{

    public class Program

    {

        static bool tickRunning = true;  // flag variable 

​

        public static void Main(string[] args)

        {

            tickRunning = true;

​

            Thread tickThread = new Thread(() =>

            {

                while (tickRunning)

                {

                    Console.WriteLine("Tick");

                    Thread.Sleep(1000);

                }

            });

​

            tickThread.Start();

​

            Console.WriteLine("Press a key to stop the clock");

            Console.ReadLine();

            tickRunning = false;

            Console.WriteLine("Press a key to exit");

            Console.ReadLine();

        }

    }

}