设计实现一个模拟的班级信息管理系统，合理运用数组、指针、结构体及文件操作等，实现一个模拟的班级通信录管理系统。该系统用于管理学生的基本信息、通信信息等。(Design and implementation of a simulation class information management system, the rational use of arrays, pointers, structures and file operations, to achieve an analog class communication book management system. The system is used to manage the basic information, communication and information of students.)