class PRogram
    {
        Thread t1;//线程1
        Thread t2;//线程2
        Thread t3;//线程3
        int i = 0;
        static void Main(string[] args)
        {
            Program demo = new Program();
            demo.GoStart();
        }

        public Program()
        {
            t1 = new Thread(new ThreadStart(run));
            t2 = new Thread(new ThreadStart(run));
            t3 = new Thread(new ThreadStart(run));
            t1.Name = "线程⑴";
            t2.Name = "线程⑵";
            t3.Name = "线程⑶";
        }

        private void run()
        {
            while (1 == 1)
            {
                Monitor.Enter(this);
                Console.WriteLine(Thread.CurrentThread.Name+"输出了"+i);
                i++;
                if (i > 1000)
                {
                    ThreadStop();
                }
                Monitor.Exit(this);
                Thread.Sleep(10);
            }
            
        }

        private void ThreadStop()
        {
            Console.WriteLine("执行完成");
            t1.Abort();
            t2.Abort();
            t3.Abort();
            GC.Collect();//不知道是否有用，请大牛指点，本人连菜鸟都不是哦
        }

        public void GoStart()
        {
            t1.Start();
            t2.Start();
            t3.Start();
        }


    }