两个程序，一个服务端，一个客户端。多个客户可买票，通过通信队列实现消息的传送，如传票价，余下的票数等功能。-two procedures, a server, a client. A number of customers buying cohort achieved through communication of information transmission, such as Chuan fares, the remaining functions of the votes.

vc写的火车售票系统服务程序，包括买票，退票，查看票面信息等相关环节

火车购票系统描述了在不同站点买票，但余票数仍然正确，不会出现一票两卖的矛盾-describe a railway ticket system