diff --git a/library b/library
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diff --git a/library.cpp b/library.cpp
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+#include <iostream>
+#include <iomanip>
+#include <vector>
+#include <string>
+#include <algorithm> // Needed for transform
+using namespace std;
+
+class Book {
+private:
+    static int nextBookID;
+    int bookID;
+    string title;
+    string author;
+    bool isBorrowed;
+
+public:
+    Book(const string &title, const string &author) : title(title), author(author), isBorrowed(false) {
+        bookID = nextBookID++;
+    }
+
+    virtual void displayDetails() const {
+        cout << "Book ID: " << bookID << "\nTitle: " << title << "\nAuthor: " << author << "\nStatus: " 
+             << (isBorrowed ? "Borrowed" : "Available") << endl;
+    }
+
+    virtual string getType() const = 0;
+
+    int getBookID() const {
+        return bookID;
+    }
+
+    bool getBorrowStatus() const {
+        return isBorrowed;
+    }
+
+    void borrowBook() {
+        if (!isBorrowed) {
+            isBorrowed = true;
+            cout << "Book borrowed successfully!" << endl;
+        } else {
+            cout << "Book is already borrowed!" << endl;
+        }
+    }
+
+    void returnBook() {
+        if (isBorrowed) {
+            isBorrowed = false;
+            cout << "Book returned successfully!" << endl;
+        } else {
+            cout << "Book is not borrowed!" << endl;
+        }
+    }
+};
+
+int Book::nextBookID = 1001;
+
+class FictionBook : public Book {
+public:
+    FictionBook(const string &title, const string &author) : Book(title, author) {}
+
+    void displayDetails() const override {
+        Book::displayDetails();
+        cout << "Genre: Fiction" << endl;
+    }
+
+    string getType() const override {
+        return "Fiction";
+    }
+};
+
+class NonFictionBook : public Book {
+public:
+    NonFictionBook(const string &title, const string &author) : Book(title, author) {}
+
+    void displayDetails() const override {
+        Book::displayDetails();
+        cout << "Genre: Non-Fiction" << endl;
+    }
+
+    string getType() const override {
+        return "Non-Fiction";
+    }
+};
+
+class Library {
+private:
+    vector<Book*> books;
+
+public:
+    void addBook() {
+        string title, author, type;
+        cout << "Enter Book Title: ";
+        cin.ignore();
+        getline(cin, title);
+        cout << "Enter Author Name: ";
+        getline(cin, author);
+        cout << "Enter Book Type (Fiction/Non-Fiction): ";
+        cin >> type;
+
+        // Convert the type to lowercase
+        transform(type.begin(), type.end(), type.begin(), ::tolower);
+
+        Book* newBook = nullptr;
+        if (type == "fiction") {
+            newBook = new FictionBook(title, author);
+        } else if (type == "non-fiction") {
+            newBook = new NonFictionBook(title, author);
+        } else {
+            cout << "Invalid book type!" << endl;
+            return;
+        }
+
+        books.push_back(newBook);
+        cout << "Book added successfully!" << endl;
+    }
+
+    void removeBook(int bookID) {
+        for (auto it = books.begin(); it != books.end(); ++it) {
+            if ((*it)->getBookID() == bookID) {
+                delete *it;
+                books.erase(it);
+                cout << "Book removed successfully!" << endl;
+                return;
+            }
+        }
+        cout << "Book not found!" << endl;
+    }
+
+    void borrowBook(int bookID) {
+        for (Book* book : books) {
+            if (book->getBookID() == bookID) {
+                book->borrowBook();
+                return;
+            }
+        }
+        cout << "Book not found!" << endl;
+    }
+
+    void returnBook(int bookID) {
+        for (Book* book : books) {
+            if (book->getBookID() == bookID) {
+                book->returnBook();
+                return;
+            }
+        }
+        cout << "Book not found!" << endl;
+    }
+
+    void displayAllBooks() const {
+        cout << "Library Book List\n----------------------------\n";
+        for (const Book* book : books) {
+            book->displayDetails();
+            cout << "----------------------------\n";
+        }
+    }
+
+    ~Library() {
+        for (Book* book : books) {
+            delete book;
+        }
+    }
+};
+
+int main() {
+    Library library;
+    int choice, bookID;
+
+    while (true) {
+        cout << "\nLibrary Management System\n";
+        cout << "1. Add Book\n2. Remove Book\n3. Borrow Book\n4. Return Book\n5. Display All Books\n6. Exit\nChoose an option: ";
+        cin >> choice;
+
+        switch (choice) {
+            case 1:
+                library.addBook();
+                break;
+            case 2:
+                cout << "Enter Book ID to remove: ";
+                cin >> bookID;
+                library.removeBook(bookID);
+                break;
+            case 3:
+                cout << "Enter Book ID to borrow: ";
+                cin >> bookID;
+                library.borrowBook(bookID);
+                break;
+            case 4:
+                cout << "Enter Book ID to return: ";
+                cin >> bookID;
+                library.returnBook(bookID);
+                break;
+            case 5:
+                library.displayAllBooks();
+                break;
+            case 6:
+                cout << "Exiting..." << endl;
+                return 0;
+            default:
+                cout << "Invalid option! Please try again." << endl;
+        }
+    }
+}