Question

C++ Question

The aim of this assignment is to design and implement a computerized “Library Management System”. The system will be used in the back-office to manage the books in the library catalog and to keep track of the various users (borrowers) of the library. The system provides the following key functionalities:

Books are characterized by a call number, a title, and a flag that indicates whether the book is currently ‘on-shelf’ (in the library) or ‘on-loan’.

-Adding and removing books to and from the catalog.

-Add 10 books to the library

Answer 1

#include <iostream>

#include <vector>

#define ON_SHELF 1

#define ON_LOAN 2

using namespace std;

class Book

{

private:

int callNumber;

string title;

int flag;

public:

Book()

{

this->callNumber = 0;

this->title = "";

this->flag = 0;

}

Book(int callNumber, string title)

{

this->callNumber = callNumber;

this->title = title;

this->flag = ON_SHELF;

}

int getCallNumber(){return this->callNumber;}

string getTitle(){return this->title;}

int getFlag(){return this->flag;}

void setFlag(int flag)

{

this->flag = flag;

}

string getStatus()

{

if(getFlag() == ON_SHELF)

return "On Shelf";

else

return "Borrowed";

}

};

void printMenu();

void addBook(vector<Book> );

void borrowBook(vector<Book> );

void removeBook(vector<Book> );

void listAllBooks(vector<Book> );

int main()

{

int choice;

vector<Book> books;

// initially 8 books are added

books.push_back(Book(190, "A Clokwork Orange"));

books.push_back(Book(456, "The Elephant Tree"));

books.push_back(Book(110, "3 Mistakes Of My Life"));

books.push_back(Book(167, "The Zombie Room"));

books.push_back(Book(971, "Requiem for a Dream"));

books.push_back(Book(23, "A Splendid Thousand Suns"));

books.push_back(Book(846, "And There Were None"));

books.push_back(Book(287, "The Grapes Of Wrath"));

cout << endl << "<< WELCOME TO THE LIBRARY MANAGEMENT SYSTEM >>\n----------------------------------------------" << endl;

do

{

printMenu();

cin >> choice;

switch(choice)

{

case 1:

{

addBook(books);

break;

}

case 2:

{

borrowBook(books);

break;

}

case 3:

{

removeBook(books);

break;

}

case 4:

{

listAllBooks(books);

break;

}

case 5:

{

cout << endl << "Thank you!\nGood Bye.\n";

exit(0);

}

default:

cout << endl << "Invalid choice" << endl;

}

}while(choice != 5);

}

void printMenu()

{

cout << "1. Add a book\n2. Borrow a book\n3. Remove a book\n4. List all books\n5. Exit\n\nEnter choice: ";

}

void addBook(vector<Book> books)

{

int callNum;

string title;

cout << "Enter call number: ";

cin >> callNum;

cin.ignore();

bool found = false;

for(Book book : books)

{

if(book.getCallNumber() == callNum)

{

found = true;

break;

}

}

if(found)

cout << endl << "Book with the same call number already exists!" << endl << endl;

else

{

cout << "Enter title: ";

getline(cin, title);

books.push_back(Book(callNum, title));

cout << endl << "Book with title " << title << " is added successfully!" << endl << endl;

listAllBooks(books);

}

}

void borrowBook(vector<Book> books)

{

int callNum;

cout << "Enter the call number of the book: ";

cin >> callNum;

bool found = false;

int index = 0;

for(int i = 0; i < books.size(); i++)

{

if(books[i].getCallNumber() == callNum)

{

found = true;

index = i;

break;

}

}

books[index].setFlag(ON_LOAN);

if(!found)

cout << endl << "No books found for call number: " << callNum << endl;

else

{

cout << endl << "Book borrowed:" << endl << "Title: " << books[index].getTitle() << ", Status: " << books[index].getStatus() << endl << endl;

listAllBooks(books);

}

}

void removeBook(vector<Book> books)

{

int callNum;

cout << "Enter the call number of the book: ";

cin >> callNum;

bool found = false;

int index = 0;

for(int i = 0; i < books.size(); i++)

{

if(books[i].getCallNumber() == callNum)

{

found = true;

index = i;

break;

}

}

if(!found)

cout << endl << "No books found for call number: " << callNum << endl << endl;

else

{

Book book = books[index];

books.erase(books.begin() + index);

cout << endl << "Book deleted successfully:" << endl << "Title: " << book.getTitle() << endl << endl;

listAllBooks(books);

}

}

void listAllBooks(vector<Book> books)

{

cout << endl << "*** ALL BOOKS ***\n------------------" << endl;

for(Book book : books)

{

cout << "Title: " << book.getCallNumber() << ", Title: " << book.getTitle() << ", Status: " << book.getStatus() << endl;

}

cout << endl;

}

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