该系统要求实现一个简单、实用的通信录管理程序，主要功能包括通信录数据的录入、查找、修改、删除、排序、显示等。所有通信录数据都要利用文件系统保存，以备系统下次运行时使用。通过此课题，熟练掌握文件、数组、指针的各种操作，以及一些基本算法思想的应用。-The system requirements to achieve a simple, practical address book management program, the main functions include address book data entry, search, modify, delete, sort, and display. All recorded data communications should be saved using the file system to prepare for the next run-time system to use. With this issue, master files, arrays, pointers and a variety of operations, as well as some basic ideas of the application algorithm.