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@ -25,6 +25,58 @@
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系统的功能性需求：
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- 数据的查书、借书、还书、打印书籍、添加、删除展示。
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-读数据
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-保存数据
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### C6：删除书籍
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选择菜单命令：6 提示删除书籍、你想要删除哪本书籍？和请输入图书编号，则输入图书编号。若找到输出书籍的信息并提示Delele，若没找到则提示Not Found.
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```
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请选择：6
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Delete Book
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Which book you wanna delelet?
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Enter book ID: 4
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Book
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**************** id: 4 ****************
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**** title: 《 4 》****
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************** Number: 4 **************
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************************
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Deleted
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```
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```
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请选择：6
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Delete Book
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Which book you wanna delelet?
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Enter book ID: 5
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Not found
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```
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### C4：打印书籍
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选择菜单命令：4 提示打印书籍并打印图书信息，若没有书，则输出Total: 0 books，若有书，则输出书籍信息
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```
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请选择：4
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Print All Books
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Total: 0 books
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```
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```
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请选择：4
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Print All Books
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Book
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**************** id: 6 ****************
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**** title: 《 6 》****
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************** Number: 6 **************
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Total: 1 books
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```
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系统的非功能性需求：
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- 菜单驱动的命令行交互界面。
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