用C语言链表写的一个图书管理系统，可以实现增添图书，删除图书，查找图书等功能。-C language linked list to write a library management system, you can add books, delete books, find books and other functions.

利用数据结构链表实现图书信息管理，命名为SqList.cpp(Realization of library information management by using data structure linked list,It's called SqList.cpp)