Books and users' borrow and return modules

Books and users' borrow and return modules

/*
Name: Tang xiangheng
Copyright: Tang xiangheng
Author: Tang xiangheng
Date: 09-11-08
Description:
*/
# Include <iostream>
Using namespace STD;
# Define max 20 // defines the size of array elements
# Define loan_yes 1 // indicates that the book has been lent out
# Define loan_no 0 // indicates that the book has not been lent out
# Define unlend 00 // The user borrowed the book
# Define lend 11 // The user has not borrowed a book
******************** **********
Struct user
{
Char uname [21]; // User Name
Char unuber [9]; // credential number
Char classno [35]; // class
Int stuno; // number
Int SOS; // borrow sign
};
User ones [Max] =
{"Liu Lilin", "0001", "embedded 3081", 1, unlend}, {"clock-style regular", "0002", "embedded 3082", 2, unlend },
{"Tang Qiliang", "0003", "iiit3083", 3, unlend}, {"Wang Qigang", "0004", "numerical control 3088", 4, unlend },
{"Tang Culture", "0005", "biochemical pharmaceutical 3087", 5, unlend}, {"Wang Xiaobo", "0006", "Art Design 3086", 6, unlend },
{"Deng Wen", "0007", "Ai 3088", 10, unlend}, {"Tang Political Commissar", "0008", "Military Command 8088", 69, unlend },
{"Zhang Hao", "0009", "biochemical research 3308", 40, unlend}, {"Li Kaifu", "0010", "software design 3086", 88, unlend }};

********************** **********
Struct book
{
Char ID [9]; // The ISBN number of the book
Char name [35]; // Title
Char author [11]; // prepared
Char publisher [31]; // Press
Float price; // price
Int flag; // outbound flag
User ones;
};
Book [Max] =
{"Isbn001", "Linux programming", "Kai-Fu Li", "Xiamen University Press", 64.00, loan_no },
{"Isbn002", "C ++ Program Design", "Tan haoqiang", "Tsinghua University Press", 36.00, loan_no },
{"Isbn003", "PIC microcontroller practical C", "Sun Anqing", "China Power Press", 39.80, loan_no },
{"Isbn004", "Java programming", "Tang xiangheng", "Software Institute Press", 55.00, loan_no },
{"Isbn005", "C ++ practical tutorial", "Zheng AQI", "Electronic Industry Press", 48.00, loan_no },
{"Isbn006", "C language programming", "C. Thomas", "Electronic Industry Press", 68.00, loan_no },
{"Isbn007", "Computer System Design", "Wang weiming", "People's post Publishing House", 88.00, loan_no },
{"Isbn008", "Data Structure", "Yan Weimin", "Tsinghua University Press", 28.00, loan_no },
{"Isbn009", "Database Design", "Chen Xiaobo", "China Power Press", 55.00, loan_no },
{"Isbn010", "computer algorithm", "Liu Xiaoping", "Peking University Press", 77, loan_no }};
 
Int main ()
{
Void functionmenu (); // menu display function
Void listbook (); // display the list of books
Void lendbook (); // borrow Function
Void returnbook (); // return Function
Void showlended (); // display borrowed books
Void playuser (); // displays the user's borrowing Information

Char choice;
While (choice! = 6) // continuously display the menu
{
Functionmenu ();
Cin> choice;
Switch (choice)
{
Case '1': // display all books
Listbook (); break;
Case '2': // borrow books
Lendbook (); break;
Case '3': // return a book
Returnbook (); break;
Case '4': showlended (); break;
// Display the user's borrowing Information
Case '5': playuser (); break;
Case '6': // exit
Return 0;
Default: // do not perform any operation
Break;
}
}
System ("pause ");
Return 0;
}
// **************************** Display all information ******** ***************************
Void listbook ()
{
Char * Title = "borrow ";
// Display the number of digits occupied by N in the header. s indicates the character type, and F indicates the floating point type.
Printf ("% 8 S % 16 S % 11 S % 14 S % 10 S % 10 s/n", "ISBN", "title", "author ", "Press", "price", "external lending ");
For (INT I = 0; I <Max; I ++)
{
If (Book [I]. Price = 0) break; // if the price is 0, all books are displayed.
If (Book [I]. Flag = loan_yes) // define a macro as a Chinese character
{
Title = "borrow ";
} Else
{
Title = "in Database ";
}
// Display all information about the book
Printf ("% 9 S % 16 S % 11 S % 16 S % 8.2f % 8 S/N ",
Book [I]. ID, Book [I]. Name, Book [I]. Author, Book [I]. Publisher, Book [I]. Price, title );
}
}
********* ***************************
Void lendbook ()
{
Char bookid [11]; // used to receive the book number to be borrowed
Char usernuber [11]; // used to receive the account ID to be lent to the user
Int I, J;

Cout <"Enter the book number you want to borrow :";
Cin> bookid;
For (I = 0; I <Max; I ++) // find a book
{
If (strcmp (Book [I]. ID, bookid) = 0) // find the book
{
If (Book [I]. Flag = loan_yes) // if the book has been lent
{
Cout <"the book you want to borrow has been borrowed by someone else! "<Endl;
} Else // perform the borrow operation
{
Cout <"Enter your debit card number :";
Cin> usernuber;
For (j = 0; j <Max; j ++) // scans users.
{
If (strcmp (ones [J]. unuber, usernuber) = 0) // This user information is available
{
Ones [J]. SOS = lend; // mark that the user has borrowed a book
Book [I]. Flag = loan_yes; // The tag book has been lent out.
// Display the borrowed books
Cout <ones [J]. uname <"hello, sir! The books you borrowed are: "<book [I]. Name <Endl;
Cout <"book details:" <Endl;
Cout <"" <" ISBN" <"" <"" title "<" <"author" <"" <"<"
"Press" <"<" price "<" borrower "<Endl;
Printf ("% 9 S % 16 S % 11 S % 16 S % 8.2f % 8 S/N ",
Book [I]. ID, Book [I]. name, Book [I]. author, Book [I]. publisher, Book [I]. price, ones [J]. uname );
Cout <"the book has been borrowed successfully. Please return the book on time! "<Endl;
}
}

}
Break;
}
}
If (I = max) // you have found all of them. If you do not have this book, make a prompt.
{
Cout <"the book you are looking for cannot be found! "<Endl;
}
}
************* *************************
Void returnbook ()
{
Char bookid [11]; // used to receive the number of books to be returned
Int I;
Cout <"Enter the book number for returning the book :";
Cin> bookid;
For (I = 0; I <Max; I ++) // find a book
{
If (strcmp (Book [I]. ID, bookid) = 0) // find the book
{
If (Book [I]. Flag = loan_yes & ones [I]. SOS = lend) // For example, it indicates lending
{
Book [I]. Flag = loan_no; // mark the Outstanding Books
Ones [I]. SOS = unlend; // mark the user's book return
Cout <"your other books are:" <Endl;
Cout <"" <" ISBN" <"" <"" title "<" <"author" <"" <"<"
"Press" <"<" price "<" borrower "<Endl;
Printf ("% 9 S % 16 S % 11 S % 16 S % 8.2f % 8 S/N ",
Book [I]. ID, Book [I]. name, Book [I]. author, Book [I]. publisher, Book [I]. price, ones [I]. uname );
Cout <"return the book successfully. Thank you for using it! Welcome to the next visit! "<Endl;
} Else // if the book is not borrowed, an error is returned.
{
Cout <"Operation error. This book is in the library! Enter again! "<Endl;
}
}
}
}
********* **********************
Void showlended ()
{
Cout <"Welcome to query! "<Endl;
Char M [11];
Cout <"Enter the ISBN number of the book to be queried :";
Cin> m;
For (INT I = 0; I <Max; I ++) // scans the library
{
If (strcmp (Book [I]. ID, m) = 0) // find the book
{
If (Book [I]. Flag = loan_yes) // and lent
{
Cout <"the information about the books you want to query and the borrower is as follows" <Endl;
Cout <"" <" ISBN" <"" <"" title "<" <"price" <"" <"
"Borrower" <"" <"debit card number" <"" <"class" <Endl;
// Display borrowed books
Printf ("% 9 S % 16 S % 8.2f % 11 S % 10 S % 14 S/N ",
Book [I]. ID, Book [I]. name, Book [I]. price, ones [I]. uname, ones [I]. unuber, ones [I]. classno );
} Else
{
Cout <"This book has not been lent out! "<Endl;
}
}
}
}
************ *************************
Void functionmenu ()
{
Cout <"1. query all books" <Endl;
Cout <"2. Borrow Books" <Endl;
Cout <"3. Returning books" <Endl;
Cout <"4. querying detailed borrow information" <Endl;
Cout <"5. Display User Information and borrow information" <Endl;
Cout <"6. Quit" <Endl;
Cout <"select function No :";
}
******* *******************
Void playuser ()
{
Int I;
Char * change = "borrowed books"; // prepare for subsequent conversions
Printf ("% 8 S % 10 S % 16 S % 10 S % 12 S/N", "name", "card number", "class", "No ", "borrow books ");
For (I = 0; I <Max; I ++) // Scan
{
If (ones [I]. stuno = 0) break; // if the number is 0, it is like the end. This is to prevent unnecessary display
If (ones [I]. SOS = lend) // borrow a book
{
Change = "borrowed books ";
} Else
{
Change = "books not borrowed ";
}
Printf ("% 8 S % 10 S % 16 S % 10i % 12 S/N", ones [I]. uname, ones [I]. unuber, ones [I]. classno, ones [I]. stuno, change );
}

}