Untitled

class Car {
  double _speed = 0; 

 
  set speed(double value) {
    if (value < 0) {
      print("Speed tidak bisa negatif, diatur ke 0.");
      _speed = 0;
    } else {
      _speed = value;
    }
  }


  double get speed => _speed;
}

void main() {
  Car myCar = Car();

  myCar.speed = 50; 
  print("Kecepatan mobil: ${myCar.speed} km/h");

  myCar.speed = -10; 
  print("Kecepatan mobil: ${myCar.speed} km/h");
}