library_management_easy

just a simple C++ code to add,delete,desplay,search books #include #include #include

using namespace std;

class Library { public: int choice; static const int maxSize = 1000; string title, author; string stringArray[maxSize] = { "The Great Gatsby", "To Kill a Mockingbird", "The Catcher in the Rye", "The Lord of the Rings" }; // Initializing with 4 strings int currentSize = 4; // Current number of strings in the array int numberOfNewStrings;

void add();
void del();
void search(const string& substring);
void display();
void input();

};

void Library::input() { do { cout << "Main Menu"; cout << "\n1. Add a book by its title"; cout << "\n2. Delete a book by its s.no"; cout << "\n3. Search a book by its title"; cout << "\n4. Display all books"; cout << "\n5. Exit from menu";

    cout << "\nEnter your choice from above: ";
    cin >> choice;

    switch (choice) {
    case 1:
        add();
        break;
    case 2:
        del();
        break;
    case 3: {
        string substring;
        cout << "Enter the substring to search for: ";
        cin.ignore(); // Clear the newline character from the buffer
        getline(substring);
        search(substring);
        break;
    }
    case 4:
        display();
        break;
    case 5:
        cout << "Exiting menu.\n";
        break;
    default:
        cout << "Invalid choice, please try again.\n";
    }
} while (choice != 5);

}

void Library::add() { cout << "How many new books do you want to add? "; cin >> numberOfNewStrings;

// Check if adding new strings will exceed the maximum size
if (currentSize + numberOfNewStrings > maxSize) {
    cout << "Not enough space in the array to add " << numberOfNewStrings << " new books." << endl;
    return;
}

// Get new strings from the user
cin.ignore(); // Clear the newline character from the buffer
for (int i = 0; i < numberOfNewStrings; ++i) {
    cout << "Enter new book title " << i + 1 << ": ";
    getline(cin, stringArray[currentSize + i]);
}

// Update the current size
currentSize += numberOfNewStrings;

}

void Library::del() { // Print the initial array cout << "Initial array:\n"; for (int i = 0; i < currentSize; ++i) { cout << i << ": " << stringArray[i] << endl; }

// Ask user which string to delete
int deleteIndex;
cout << "Enter the index of the book you want to delete (0 to " << currentSize - 1 << "): ";
cin >> deleteIndex;

// Validate the index
if (deleteIndex < 0 || deleteIndex >= currentSize) {
    cout << "Invalid index!" << endl;
    return;
}

// Shift elements to the left to overwrite the deleted string
for (int i = deleteIndex; i < currentSize - 1; ++i) {
    stringArray[i] = stringArray[i + 1];
}

// Reduce the current size
currentSize--;

// Print the updated array
cout << "\nUpdated array:\n";
for (int i = 0; i < currentSize; ++i) {
    cout << i << ": " << stringArray[i] << endl;
}

}

void Library::search(const string& substring) { bool found = false; for (int i = 0; i < currentSize; i++) { if (stringArray[i].find(substring) != string::npos) { cout << stringArray[i] << endl; found = true; } } if (!found) { cout << "No book found containing the substring: " << substring << endl; } }

void Library::display() { cout << "Current list of books:\n"; for (int i = 0; i < currentSize; ++i) { cout << i << ": " << stringArray[i] << endl; } }

int main() { Library ob; ob.input();

return 0;

}