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

Posted by Joe Dardis
Joe Dardis
1,266 Points

question on subclasses

I cant figure out what I am doing wrong here

class Vehicle {
    var numberOfDoors: Int
    var numberOfWheels: Int

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

class Car: Vehicle {
    var numberOfSeats: Int

    override init(withDoors numberOfDoors: Int, andWheels numberOfWheels: Int){
        super.init(withDoors: Int, andWheels: Int)
        self.numberOfSeats = 4

    }
}

let someCar = Car(withDoors: 4, andWheels: 4)

1 Answer

Gabriel Mititelu
Gabriel Mititelu
5,881 Points
Gabriel Mititelu
Gabriel Mititelu
5,881 Points

Change the order of expressions in the second init method. 

override init(withDoors numberOfDoors: Int, andWheels numberOfWheels: Int) {
              self.numberOfSeats = 4
              super.init(withDoors: Int, andWheels: Int)

}

That should fix it.

Joe Dardis
Joe Dardis
1,266 Points

Thanks but didn't work for me