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iOS Object-Oriented Swift 2.0 Class Inheritance Creating a Subclass

Ohood Alhamid
Ohood Alhamid
1,317 Points
Posted by Ohood Alhamid
Ohood Alhamid
1,317 Points

extra argument error

I have tried to solve the question but an error is shown "extra argument error"

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 numberOfSeats: Int = 4

    override init(withDoors doors: Int, andWheels wheels: Int)
  {
    super.init(doors: doors, wheels : wheels)
    {
    } 
  }    
}

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

1 Answer

Steve Hunter
Steve Hunter
57,712 Points

Hi there,

Have a look at this thread which should help you out.

I think the default value needs setting inside the init method before the call to the super. And the labels may need using, like withDoors, rather than just doors.

Let me know how you get on.

Steve.

Ohood Alhamid
Ohood Alhamid
1,317 Points
Ohood Alhamid
Ohood Alhamid
1,317 Points

Thank you for your help :D

Steve Hunter
Steve Hunter
57,712 Points

No problem! :+1: