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iOS Object-Oriented Swift 2.0 Class Inheritance Creating a Subclass

Julien Schmitt
Julien Schmitt
2,334 Points

Number of seats

Hi all,

How can I get the number of seats to show off when I create the instance?

Only the wheels and doors are appearing and I'm not sure why. Since the seats have a value of 4, I shouldn't initialize it, no?

Thanks,

Julien

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 numberOfSeat: Int = 4

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

let someCar = Car(withDoors: 12, andWheels: 12)

2 Answers

jon kelson
jon kelson
5,149 Points

Hi Julien this is how I did it hope it helps .

class Car: Vehicle { var numberOfSeats: Int override init(withDoors doors: Int, andWheels wheels: Int){ self.numberOfSeats = 4 super.init(withDoors: doors, andWheels: wheels) } }

let someCar = Car(withDoors: 2, andWheels: 4)

Julien Schmitt
Julien Schmitt
2,334 Points

Thanks Jon, it worked.

I tried your method earlier but I was still getting errors from treehouse. Started to get frustrated till I saw that I missed to put an 's' to numberOfSeats.