Introduction - If you have any usage issues, please Google them yourself
1 book information includes: number, title, author, publishing unit prices. 2. System in menu mode. 3. book information input function (Book information is stored with the file)- input. Delete and modify functions 4. book information. 5. Book information browsing function- output. 6. Query function- algorithm :( by title/author query). 7. The sorting function- algorithm :( Sort by title/Sort by price). 8. Books Shop functions: statistics of the total price of the purchase of books, give the list, the screen output single reference to the following practical textbook.