Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Object-Oriented Swift 2.0 Class Inheritance Creating a Subclass

Wannakorn panij
Wannakorn panij
1,358 Points

override in it problem

how to fix this code

classes.swift
class Vehicle {
    var numberOfDoors: Int
    var numberOfWheels: Int

    init(withDoors doors: Int, andWheels wheels: Int) {
        self.numberOfDoors = doors
        self.numberOfWheels = wheels
    }
}

// Enter your code below
class Car: Vehicle {
  var numberOfSeats: Int = 4

  override init(withDoors doors: Int, andWheels wheels: Int){
      self.numberOfSeat = numberOfSeat
      super.init(withDoors: doors, andWheels: wheels)
    }
}
let someCar = Car(withDoors: 4, andWheels: 4)

1 Answer

Kyler Smith
Kyler Smith
10,110 Points

You did this correct with one mistake. In your override init method, what do you believe the line below is doing?

      self.numberOfSeat = numberOfSeat

When you remove this you have corrected the problem.