Step 1 - Start with a typed list

void main() {
  List<String> todos = [];
  todos.add('Learn functions');
  todos.add('Practice map/where');
  print(todos);
}

Step 2 - Add helper functions

void addTodo(List<String> todos, String task) {
  todos.add(task);
}

void removeTodo(List<String> todos, String task) {
  todos.remove(task);
}

• Keep logic in functions, not all inside main.

Step 3 - Mark done (simple style)

void markDone(List<String> done, String task) {
  done.add(task);
}

• For beginner level, use a second list for done tasks.

Step 4 - Print with index

void printTodos(List<String> todos) {
  for (int i = 0; i < todos.length; i++) {
    print('${i + 1}. ${todos[i]}');
  }
}

Practice tasks

• Add at least 5 tasks.
• Remove one task by value.
• Show pending and done lists separately.