diff --git a/src/main.dart b/src/main.dart
index deeaf98..0810943 100644
--- a/src/main.dart
+++ b/src/main.dart
@@ -1,8 +1,102 @@
-// TODO: Run task list app
-void main(List<String> args) {
-  print('Hello World');
+import 'dart:io';
+
+class Task {
+  String title;
+
+  Task(this.title);
 }
 
 class TaskListApp {
-  // TODO: Implement Task list app
+  List<Task> tasks = [];
+
+  //add task
+  void addTask(String title) {
+    tasks.add(Task(title));
+    print('Task is added');
+  }
+
+  //view tasks
+  void viewTasks() {
+    print('\nTasks: ');
+    for (int i = 0; i < tasks.length; i++) {
+      print('${tasks[i].title}');
+    }
+  }
+
+  //update
+  void updateTask(int index, String newTitle) {
+    if (index >= 0 && index < tasks.length) {
+      tasks[index].title = newTitle;
+      print('Task is updated');
+    } else {
+      print('Invalid index');
+    }
+  }
+
+  //delete 
+  void deleteTask(int index) {
+    if (index >= 0 && index < tasks.length) {
+      tasks.removeAt(index);
+      print('Task is deleted');
+    } else {
+      print('Invalid task index.');
+    }
+  }
+
+}
+
+void main(List<String> args) {
+  TaskListApp taskList = TaskListApp();
+  while (true) {
+    print('\nTask List App Menu:');
+    print('1. Add Task');
+    print('2. View Tasks');
+    print('3. Update Task');
+    print('4. Delete Task');
+    print('5. Exit');
+    stdout.write('Enter your choice (1-6): ');
+
+    String choice = stdin.readLineSync() ?? '';
+    print('');
+
+    switch (choice) {
+      //adding
+      case '1':
+        stdout.write('Add a task: ');
+        String title = stdin.readLineSync() ?? '';
+        taskList.addTask(title);
+        break;
+
+      //view
+      case '2':
+        taskList.viewTasks();
+        break;
+
+      //updating
+      case '3':
+        taskList.viewTasks();
+        stdout.write('what is the number of the task to update? ');
+        int updateNum=int.tryParse(stdin.readLineSync() ?? '') ?? -1;
+        stdout.write('what is the new title? ');
+        String newTitle = stdin.readLineSync() ?? '';
+        taskList.updateTask(updateNum - 1, newTitle);
+        break;
+
+      //delete
+      case '4':
+        taskList.viewTasks();
+        stdout.write('what is the number of the task to delete? ');
+        int indexToDelete = int.tryParse(stdin.readLineSync() ?? '') ?? -1;
+        taskList.deleteTask(indexToDelete - 1);
+        break;
+
+      //exit
+      case '5':
+        print('Exit');
+        exit(0);
+
+      default:
+        print('Invalid choice. Please try again');
+    }
+  }
 }