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iOS Object-Oriented Swift 2.0 Class Inheritance Creating a Subclass

danieldavidson4
danieldavidson4
1,919 Points
Posted by danieldavidson4
danieldavidson4
1,919 Points

I'm not sure what I'm doing wrong here. The preview has no notes either.

Help

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 {
let isSuper: Bool = true
var numberOfSeats: Int = 4
override init(withDoors doors: Int, andWheels wheels: Int){
super.init(withDoors: doors, andWheels: wheels)
self.numberOfSeats = 4
let someCar = Car(withDoors: 4, andWheels: 4)

}
}

1 Answer

jcorum
jcorum
71,830 Points
jcorum
jcorum
71,830 Points

For starters, it's a really good idea to indent properly. The usual rule is to indent (using tab is easiest) after each opening curly brace and outdent after each closing curly brace. Next, the challenge wanted only one new stored property for Car objects. Since the new property has a default value you don't need an initializer. And when you create an object from a class you do it outside the class:

class Car: Vehicle {
  var numberOfSeats = 4

}

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