TODO

#include #include #include #include

using namespace std;

class Task { private: string description; bool isComplete;

public: Task(const string& desc) : description(desc), isComplete(false) {}

void markComplete() {
    isComplete = true;
}

void markIncomplete() {
    isComplete = false;
}

string getDescription() const {
    return description;
}

bool getStatus() const {
    return isComplete;
}

void displayTask() const {
    cout << (isComplete ? " ->" : " ") << description << endl;
}

};

class ToDoList { private: vector tasks;

public: void addTask(const string& desc) { tasks.push_back(Task(desc)); cout << "Your task has been added!" << endl; }

void deleteTask(int index) {
    if (index >= 0 && index < tasks.size()) {
        tasks.erase(tasks.begin() + index);
        cout << "Your task has been deleted!" << endl;
    } else {
        cout << "There is no task to delete." << endl;
    }
}

void markTaskComplete(int index) {
    if (index >= 0 && index < tasks.size()) {
        tasks[index].markComplete();
        cout << "Task has been marked as complete!" << endl;
    } else {
        cout << "Invalid entry!" << endl;
    }
}

void markTaskIncomplete(int index) {
    if (index >= 0 && index < tasks.size()) {
        tasks[index].markIncomplete();
        cout << "Task has been marked as incomplete!" << endl;
    } else {
        cout << "Invalid entry!" << endl;
    }
}

void displayTasks() const {
    for (int i = 0; i < tasks.size(); ++i) {
        cout << i + 1 << ". ";
        tasks[i].displayTask();
    }
}

};

int main() { ToDoList myList; int choice; string taskDesc; int taskIndex;

while (true) {
    cout << "My To-Do List" << endl;
    cout << "1. Add Task" << endl;
    cout << "2. Delete Task" << endl;
    cout << "3. Mark Task Complete" << endl;
    cout << "4. Mark Task Incomplete" << endl;
    cout << "5. Display Tasks" << endl;
    cout << "6. Exit" << endl;
    cout << "Enter your choice: ";
    cin >> choice;

cout<<endl; if (cin.fail()) { cin.clear(); cin.ignore(INT_MAX, '\n'); cout << "Invalid choice! Please try again." << endl; continue; }

    cin.ignore(INT_MAX, '\n'); 
    switch (choice) {
        case 1:
            cout << "Enter task description: ";
            getline(cin, taskDesc);
            myList.addTask(taskDesc);
            break;
        case 2:
        case 3:
        case 4:
            cout << "Enter task index: ";
            cin >> taskIndex;
            if (cin.fail()) {
                cin.clear();
                cin.ignore(INT_MAX, '\n');
                cout << "Invalid entry!" << endl;
            } else {
                switch (choice) {
                    case 2:
                        myList.deleteTask(taskIndex - 1);
                        break;
                    case 3:
                        myList.markTaskComplete(taskIndex - 1);
                        break;
                    case 4:
                        myList.markTaskIncomplete(taskIndex - 1);
                        break;
                }
            }
            break;
        case 5:
            myList.displayTasks();
            break;
        case 6:
            return 0;
        default:
            cout << "Invalid choice! Please try again." << endl;
    }
}

return 0;

}