How to fix ,,Extraneous argument label 'input:' in call" and sigrabitTHREAD1 problem in swift : I'm building calendar app in swift. It has got a sigrbrtTHREAD1 problem and that strang mistake. Sorry for probably silly question but I'm completely beginner. Here is the code:
 
import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.

        var wydarzenia = ["Wydarzenie1", "Wydarzenie2" ]
    
    weak var input: UITextField!
    
    weak var output: UILabel!
        print(wydarzenia)
        
        func show(_ sender: UIButton) {
        print(wydarzenia)
        }
    
        
        func add(_ sender: UIButton) {
        wydarzenia.append (input: String).  !Extraneous argument label 'input:' in call!
        }

  
    }
    

}



}
}