说明：  Linux聊天室,基于服务器的客户端之间通信的聊天程序，首先建立服务器程序通过多线程方式循环接收客户端信息，客户端程序发送数据，被服务器接收后广播，实现多客户端之间的通信。
(Linux chat rooms, chat program based on communication between the client server, the first server program established by multiple threads circulating receive client information, the client program sends data, the server broadcasts are received, to achieve communication between multiple clients .)