图书管理基本业务活动包括：对一本书的采编入库、清除库存、借阅和归还等等。试设计一个图书管理系统，将上述业务活动借助于计算机系统完成。 -Basic library management activities include: editing a book storage, clear inventory, borrow and return and so on. Try to design a library management system that will help the busine