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jc laurent
6,351 PointsYour definition of Car needs to contain the property specified in the directions
what about this one?
class Vehicle {
var numberOfDoors: Int
var numberOfWheels: Int
var numberOfSeats: Int
init(withDoors doors: Int, andWheels wheels: Int, withSeats seats: Int) {
self.numberOfDoors = doors
self.numberOfWheels = wheels
self.numberOfSeats = seats
}
}
class Car: Vehicle {
override init(withDoors doors:Int,andWheels wheels:Int,withSeats seats:Int) {
super.init(withDoors:doors,andWheels:wheels,withSeats:seats)
self.numberOfSeats = 4
}
}
let someCar = Car(withDoors:0, andWheels: 0, withSeats: 0)
2 Answers
Steve Hunter
57,712 PointsHi there!
You've got a couple of bits that need changing here.
First, put the Vehicle class back to how it was at the start; don't change Vehicle, that's your superclass that you want to inherit from. Next, create a subclass called Car that inherits from Vehicle:
class Car : Vehicle {}
In that class, define a member variable called numberOfSeats and make that an Int datatype. Next up, override the init method. Here, pass in the two parameters required for the super which are withDoors and andWheels. Inside, assign the value of 4 to numberOfSeats - you want a default value for the challenge. Then, call super.init as normal. Last. create an instance and store it in someCar. You end up with:
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: 4, andWheels: 4)
I hope that helps,
Steve.
jc laurent
6,351 Pointsthks Bud
Steve Hunter
57,712 PointsNo problem!
