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hillionaire
22,539 PointsObject Oriented Swift Stage 4
Can't figure this out... Below you will find two classes that don't compile. Click on the preview button to see the errors. Look at the errors and fix them one by one until you no longer see any errors.
class Vehicle {
let wheels: Int
let doors: Int
// Designated initializer
init(wheels:Int, doors:Int){
}
}
class Car: Vehicle {
// A car must default to 4 wheels and 4 doors
init(){
// call super.init
}
2 Answers
William Li
Courses Plus Student 26,868 Points- first you need to fill in
init(wheels:Int, doors:Int)by setting the object attributes to its corresponding values. - then, overwrite the
init()in Class Car by using thesuper.init()method.
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)
}
}
Steve Dowd
1,745 PointsWhy is it not necessary to write out the parameters in the init of the subclass Car?