Merge pull request #8 from swastijain132005/todo-added

todo list program added

Author: prajwal3114

Src/To-Do-List/todo.cpp

@@ -0,0 +1,145 @@
+#include <iostream>
+#include <vector>
+
+
+#include <string>
+#include <limits>
+using namespace std;
+
+
+class Task {
+private:
+    string title;
+             bool isCompleted;
+
+public:
+
+    Task(string t) : title(t), isCompleted(false) {}
+
+    void markCompleted() {
+        isCompleted = true;
+    }
+
+    string getTitle() const {
+        return title;
+    }
+
+             bool getStatus() const {
+        return isCompleted;
+    }
+};
+
+         class ToDoList {
+private:
+    vector<Task> tasks;
+
+public:
+    
+    void addTask(const string& title) {
+        if (title.empty()) {
+            cout << "❌ Task title cannot be empty!\n";
+            return;
+        }
+        tasks.push_back(Task(title));
+        cout <<        "  ✅ Task added successfully!\n";
+    }
+
+    void showTasks() const {
+        if (tasks.empty()) {
+            cout << "📭 No tasks available!\n";
+            return;
+        }
+
+        cout << "\n------ To-Do List ------\n";
+        for (size_t i = 0; i < tasks.size(); ++i) {
+            cout << i + 1 << ". " << tasks[i].getTitle()
+                 << " [" << (tasks[i].getStatus() ? "✅ Done" : "🕓 Pending") << "]\n";
+        }
+        cout << "------------------------\n";
+    }
+
+    void markTaskCompleted(int index) {
+        if (index < 1 || index > (int)tasks.size()) {
+            cout << "⚠️ Invalid task number!\n";
+            return;
+        }
+        tasks[index - 1].markCompleted();
+        cout << "✅ Task marked as completed!\n";
+    }
+
+    void deleteTask(int index) {
+        if (index < 1 || index > (int)tasks.size()) {
+            cout << "⚠️ Invalid task number!\n";
+            return;
+        }
+        tasks.erase(tasks.begin() + index - 1);
+        cout << "🗑️ Task deleted successfully!\n";
+    }
+};
+
+int getValidInt(const string& prompt) {
+    int value;
+    while (true) {
+        cout << prompt;
+        cin >> value;
+        if (cin.fail()) {
+            cout << "❌ Invalid input! Please enter a number.\n";
+                     cin.clear();
+            cin.ignore(numeric_limits<streamsize>::max(), '\n');
+        } else {
+            cin.ignore(numeric_limits<streamsize>::max(), '\n');
+                    return value;
+        }
+    }
+}
+
+int main() {
+    ToDoList todo;
+    int choice;
+    string title;
+    int index;
+
+    cout << "\n===== 📝 TO-DO LIST APPLICATION =====\n";
+    cout << "Manage your daily tasks efficiently.\n";
+
+    do {
+        cout << "\nMenu:\n";
+        cout << "1. Add Task\n";
+        cout << "2. View Tasks\n";
+        cout << "3. Mark Task as Completed\n";
+        cout << "4. Delete Task\n";
+        cout << "5. Exit\n";
+        choice = getValidInt("Enter your choice: ");
+
+        switch (choice) {
+        case 1:
+            cout << "Enter task title: ";
+            getline(cin, title);
+            todo.addTask(title);
+            break;
+
+        case 2:
+            todo.showTasks();
+            break;
+
+        case 3:
+            index = getValidInt("Enter task number to mark completed: ");
+            todo.markTaskCompleted(index);
+            break;
+
+        case 4:
+            index = getValidInt("Enter task number to delete: ");
+            todo.deleteTask(index);
+            break;
+
+        case 5:
+            cout << "👋 Exiting program. Goodbye!\n";
+            break;
+
+        default:
+            cout << "⚠️ Invalid choice. Try again!\n";
+        }
+    } while (choice != 5);
+
+    return 0;
+}