import UIKit

class MainViewController: UIViewController {


  class User {
    let name: String

    init(name: String) {
      self.name = name
      print("User \(name) was initialized")
    }



class Phone {
      let model: String
      var owner: User?

      init(model: String) {
        self.model = model
        print("Phone \(model) was initialized")
      }

      deinit {
        print("Deallocating phone named: \(model)")
      }
    }
    deinit {
      print("Deallocating user named: \(name)")
    }
  }






  func runScenario() {
    let user = User(name: "John")
    let phone = Phon
  }







  override func viewDidLoad() {
    super.viewDidLoad()
    runScenario()
  }

}