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iOS Object-Oriented Swift Value vs Reference Types Final Challenge

I am not able to solve the question.

I tried every possible logic to do what the question is asking for but I am not able to solve the question! Can you please explain what the right answer is when you right it down..

Vehicle.swift
class Vehicle {
    let wheels: Int
    let doors: Int

    // Designated initializer
    init(wheels:Int, doors:Int){
        self.wheels = wheels
        self.doors = doors

    }
}

class Car: Vehicle {
    // A car must default to 4 wheels and 4 doors
    override init(var wheels: Int, var doors: Int) {
        wheels = 4
        doors = 4

    super.init(wheels: wheels){
        // call super.init
    }
    }

}

1 Answer

Too many initializers in the Car sub class. You only need one:

class Vehicle {
    let wheels: Int
    let doors: Int

    // Designated initializer
    init(wheels:Int, doors:Int) {
        self.wheels = wheels
        self.doors = doors
    }
}

class Car: Vehicle {
    // A car must default to 4 wheels and 4 doors
    init(){
      // call super.init
      super.init(wheels: 4, doors: 4)
    }
}