如何将数据从ViewDidLoad传递给按钮的函数

class ViewController: UIViewController {
    var data: String?
    
    override func viewDidLoad() {
        super.viewDidLoad()
        data = "Hello World"
    }
    
    @IBAction func buttonTapped(_ sender: UIButton) {
        if let data = data {
            print(data)
        }
    }
}

var data: String?

class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        data = "Hello World"
    }
    
    @IBAction func buttonTapped(_ sender: UIButton) {
        if let data = data {
            print(data)
        }
    }
}

class ViewController: UIViewController {
    var dataClosure: ((String) -> Void)?
    
    override func viewDidLoad() {
        super.viewDidLoad()
        dataClosure = { data in
            print(data)
        }
        dataClosure?("Hello World")
    }
    
    @IBAction func buttonTapped(_ sender: UIButton) {
        if let dataClosure = dataClosure {
            dataClosure("Button tapped")
        }
    }
}