Online 21 A

#include <iostream>
#include <string>

using namespace std;

class Book
{
    string title;
    string author;
    string availability;
public:
    Book(){
        availability = "Available";
    }
    Book(string t, string a){
        title = t;
        author = a;
        availability = "Available";
    }
    ~Book(){}
    void setTitle(string t){
        title = t;
    }
    void setAuthor(string a){
        author = a;
    }
    void setAvailability(string a){
        availability = a;
    }
    string getTitle(){
        return title;
    }
    string getAuthor(){
        return author;
    }

    string getAvaibality(){
        return availability;
    }
    void display(){
        cout << "\tTitle: " << title << '\n';
        cout << "\tAuthor: " << author << '\n';
        cout << "\tAvailability: " << availability << '\n';
    }
};

class LibraryMember
{
    string name;
    int libraryCardNumber;
public:
    LibraryMember(){}
    LibraryMember(string s, int n){
        name = s;
        libraryCardNumber = n;
    }
    ~LibraryMember(){}
    void setName(string s){
        name = s;
    }
    void setNumber(int n){
        libraryCardNumber = n;
    }
    string getName(){
        return name;
    }
    int getNumber(){
        return libraryCardNumber;
    }
    void display(){
        cout << "\tName: " << name << '\n';
        cout << "\tLibrary Card Number: " << libraryCardNumber << '\n';
    }

};

class Library
{
    Book books[100];
    LibraryMember members[100];
    int bookCount;
    int memberCount;
public:
    Library(){
        bookCount = 0;
        memberCount = 0;
    }
    void addBook(string t, string s){
        books[bookCount].setTitle(t);
        books[bookCount].setAuthor(s);
        bookCount++;
    }
    void displayAllBooks(){
        cout << "Books in the library:\n";
        for(int i = 0; i < bookCount; i++){
            books[i].display();
            cout << '\n';
        }
    }
    void registerMember(string s, int n){
        members[memberCount].setName(s);
        members[memberCount].setNumber(n);
        memberCount++;
    }
    void displayAllMembers(){
        cout << "Members in the library:\n";
        for(int i = 0; i < memberCount; i++){
            members[i].display();
            cout << '\n';
        }
    }
    void borrowBook(string t, int id){
        bool bookFound = false;
        for(int i = 0; i < bookCount; i++){
            if(books[i].getTitle() == t){
                bookFound = true;
                int j;
                bool memberFound = false;
                for(j = 0; j < memberCount; j++){
                    if(members[j].getNumber() == id){
                        memberFound = true;
                        break;
                    }
                }
                if(!memberFound){
                    cout << "Member not found\n\n";
                    break;
                }
                books[i].setAvailability("Not Available");
                cout << "Book '" << books[i].getTitle() << "' has been borrowed by\n";
                members[j].display();
                cout << '\n';
            }
        }
        if(!bookFound)
            cout << "Book not found\n";
    }
    void returnBook(string t, int id){
        bool bookFound = false;
        for(int i = 0; i < bookCount; i++){
            if(books[i].getTitle() == t){
                bookFound = true;
                int j;
                bool memberFound = false;
                for(j = 0; j < memberCount; j++){
                    if(members[j].getNumber() == id){
                        memberFound = true;
                        break;
                    }
                }
                if(!memberFound){
                    cout << "Member not found\n\n";
                    break;
                }
                books[i].setAvailability("Available");
                cout << "Book '" << books[i].getTitle() << "' has been returned by\n";
                members[j].display();
                cout << '\n';
            }
        }
        if(!bookFound)
            cout << "Book not found\n";
    }
    void removeBook(string t){
        bool found = false;
        string name = t;
        for(int i = 0; i < bookCount; i++){
            if(books[i].getTitle() == t) found = true;
            if(found && i + 1 < bookCount){
                books[i] = books[i+1];
            }
        }
        if(!found) cout << "Book not found\n";
        else{
            cout << "Book '" << name << "' has been removed from the library.\n\n";
            bookCount--;
        }
    }
    void removeMember(int t){
        bool found = false;
        string name;
        for(int i = 0; i < memberCount; i++){
            if(members[i].getNumber() == t) found = true, name = members[i].getName();
            if(found && i + 1 < memberCount){
                members[i] = members[i+1];
            }
        }
        if(!found) cout << "Member not found\n";
        else{
            cout << "Member '" << name << "' has been removed from the library.\n\n";
            memberCount--;
        }
    }

};

int main()
{
    Library library;
    // Adding books
    library.addBook("The Great Gatsby", "F. Scott Fitzgerald");
    library.addBook("To Kill a Mockingbird", "Harper Lee");
    library.addBook("Pride and Prejudice", "Jane Austen");
    // Displaying all books
    library.displayAllBooks();
    // Registering members
    library.registerMember("John Doe", 1234);
    library.registerMember("Jane Smith", 5678);
    // Displaying all members
    library.displayAllMembers();
    // Borrowing books
    library.borrowBook("The Great Gatsby", 1234);
    library.borrowBook("To Kill a Mockingbird", 5678);
    // Displaying all books (after borrowing)
    library.displayAllBooks();
    // Returning a book
    library.returnBook("The Great Gatsby", 1234);
    // Displaying all books (after returning)
    library.displayAllBooks();
    // Removing a book
    library.removeBook("Pride and Prejudice");
    // Displaying all books (after removal)
    library.displayAllBooks();
    // Removing a member
    library.removeMember(5678);
    // Displaying all members (after removal)
    library.displayAllMembers();
    return 0;
}