本设计的目的是通过设计和调试一个基于消息的通讯系统，来实现进程之间的间接通讯，使学生对进程间的通讯机制、进程间的同步机制有一个深入的理解。-The purpose of this design through the design and debugging of a message-based communications system, to realize the process of indirect communication, so that students can inter-p