多使用链表与指针,软件课程设计使用，主要功能是进行图书的有关管理，如图书信息的创建、插入、删除，借阅信息管理等,去BUG修改版-Multi-use list with the pointer, software, curriculum design, the main function is to carry out the management books, such as the creation of book information, insert, delete, lending, s