实验了比较复杂的图书管理系统LMS,采用自定义的链表结构，在控制台在进行C++编程，比较适合大一刚学习C/C++的童鞋。-Experimented with more complex library management system LMS, using a self-defined chain structure, in the console during the C++ programming, more suitable for freshman just learning C/C++