polymorphism

gistfile1.txt

void main(){
  Car car = Car();
  car.drive();
  ElectricCar ecar = ElectricCar('to notunbazar');
  ecar.drive();
}


class Car{
  void drive(){
    print('turn');
  }
}

class ElectricCar extends Car{
  String destination='';
  ElectricCar(String userdestination){
     destination = userdestination;
  }
  @override
  void drive(){
    super.drive();
    
    print('charge and $destination');
  }
}