Description: Book information including: registration number, title, author names, words, publishers, publishing time, price, presence status (and has also been borrowed), the borrower' s name, gender, or number. Try to design a library information management system, so that it can provide the following features: the menu system to work the way (with keyboard input between 1 to 5 to select a function) (1) book information input function (book information stored with the file)-- Input (2) book information browsing- Output (3) query functions: Query by title or by author name check (at least one query) delete (4) Book Information: Delete accordance with existing state, has also put book information deleted. Modify (5) book information: According to the existence of the state changes, the book information has been changed by the state has also
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library guanli.txt