to-do-list-

#include #include #include

using namespace std;

class ToDoList { private: vector tasks; vector completed;

public: // Function to add a task void addTask(string task) { tasks.push_back(task); completed.push_back(false); // Initially, task is not completed cout << "Task added: " << task << endl; }

// Function to display tasks
void displayTasks() {
    if (tasks.empty()) {
        cout << "Your to-do list is empty!" << endl;
        return;
    }

    cout << "\nYour To-Do List:" << endl;
    for (size_t i = 0; i < tasks.size(); i++) {
        cout << i + 1 << ". " << tasks[i] << " [" << (completed[i] ? "Done" : "Not Done") << "]" << endl;
    }
}

// Function to mark a task as completed
void markTaskDone(int taskIndex) {
    if (taskIndex <= 0 || taskIndex > tasks.size()) {
        cout << "Invalid task number!" << endl;
        return;
    }
    completed[taskIndex - 1] = true;
    cout << "Task marked as completed: " << tasks[taskIndex - 1] << endl;
}

// Function to delete a task
void deleteTask(int taskIndex) {
    if (taskIndex <= 0 || taskIndex > tasks.size()) {
        cout << "Invalid task number!" << endl;
        return;
    }
    cout << "Task deleted: " << tasks[taskIndex - 1] << endl;
    tasks.erase(tasks.begin() + taskIndex - 1);
    completed.erase(completed.begin() + taskIndex - 1);
}

};

void showMenu() { cout << "\n==== To-Do List Menu ====" << endl; cout << "1. Add a task" << endl; cout << "2. View tasks" << endl; cout << "3. Mark task as done" << endl; cout << "4. Delete a task" << endl; cout << "5. Exit" << endl; }

int main() { ToDoList todoList; int choice;

do {
    showMenu();
    cout << "Enter your choice: ";
    cin >> choice;
    cin.ignore(); // Ignore the newline character left in the input buffer

    switch (choice) {
        case 1: {
            string task;
            cout << "Enter task description: ";
            getline(cin, task);
            todoList.addTask(task);
            break;
        }
        case 2:
            todoList.displayTasks();
            break;
        case 3: {
            int taskNumber;
            cout << "Enter task number to mark as done: ";
            cin >> taskNumber;
            todoList.markTaskDone(taskNumber);
            break;
        }
        case 4: {
            int taskNumber;
            cout << "Enter task number to delete: ";
            cin >> taskNumber;
            todoList.deleteTask(taskNumber);
            break;
        }
        case 5:
            cout << "Exiting the program. Goodbye!" << endl;
            break;
        default:
            cout << "Invalid choice. Please try again." << endl;
    }

} while (choice != 5);

return 0;

}