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# Cant solve this.. anyone can help??

im having a hard time with this task

objects.swift
```class Vehicle {
var numberOfDoors: Int
var numberOfWheels: Int

init(withDoors doors: Int, andWheels wheels: Int) {
self.numberOfDoors = doors
self.numberOfWheels = wheels
}

class Car: Vehicle {
var numberOfSeats: Int

init(withDoors doors: Int, andWheels wheels: Int, andSeats seats: Int){
self.numberOfSeats = seats
super.init(withDoors: doors, andWheels: wheels)
}
}

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

Hi Ali,

you have implemented this part of the task wrong : "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."

you are asked to give a default value of 4 seats to the car class, which means that it should not be in the initializer. Your code should look like this:

```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 numberOfSeats: Int = 4

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

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

I have a question. Based on your answer, how would you write this code if in the subclass, there was no initial value specified?

i.e. instead of the Car having a default numberOfSeats of 4, it's just of type Int. In that case, how would you initialise that in the code you wrote above? Do you use init? If so, how?

in that case your initializer would look like this:

```class Car: Vehicle {
var numberOfSeats: Int

override init(withDoors doors: Int, andWheels wheels: Int, andSeats seats: Int){
super.init(withDoors: doors, andWheels: wheels)
self.numberOfSeats = seats
}
}
```

When the variable has been given an initial value, you do not need to include it in the initializer, since it is all ready initialized.

Hope it makes sence :)