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iOS Object-Oriented Swift Class Inheritance Creating a Subclass

Your task is to create a subclass of Vehicle, named Car, that adds an additional stored property numberOfSeats of type I

Your task is to create a subclass of Vehicle, named Car, that adds an additional stored property numberOfSeats of type Int with a default value of 4.

I completed this task. However, my playground shows the value as __lldb_expr_98.Car. I tried print function to see if there are anything different but it showed the same. Is this some sort of error?

class Car:Vehicle { let numberOfSeats: Int = 4 }

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

objects.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

Hey buddy its not an error your getting kind of a raw value back but it you print a specific property like: print("(car.numberOfDoors)") you will get more specific values. I hope this helps.

1 Answer

Thomas Dobson
Thomas Dobson
7,511 Points

See the bottom of my code on how to access the property values of your class and print them.

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
}

let someCar = Car(withDoors: 4, andWheels: 5) //returns class Car in the gutter
print(someCar.numberOfSeats) // prints 4
print(someCar.numberOfDoors) // prints 5
print(someCar.numberOfWheels) // prints 4