说明：  该系统要求实现一个简单、实用的图书管理程序，主要功能包括图书数据的录入、查找、修改、删除、统计、排序等。所有图书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 called for a simple, practical library management program, the main features include books data entry, search, modify, delete, statistics, sorting and so on. All books must use the file system to save data to prepare for the next run time system. Through this project, master files, arrays, pointers, a variety of operations, as well as some idea of ​ ​ the application of the basic algorithm.)