这是一个简单的多线程例子，模拟了火车站售票系统的实现。

学习多线程编程，包括火车站售票系统模拟程序和网络聊天室程序-Learning multi-threaded programming, including the train station ticketing system simulation programs and Internet chat rooms program

采用多线程实现火车站售票系统，经本人编译运行通过-Station ticketing system using multi-threaded, After I compile and run by