atil beyin derslerinden kod çalmaya ve yorumlamaya devam ediyoruz.
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if let firstNumber = Int(firstText.text!) { |
bu satırda textboxa girilen değer numarasaysa şunu şunu yap diyoruz.
var result değeri de en üste koyduk ki zırt pırt uğraşmayalım almaya.
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// ViewController.swift // SimpleCalculator // // Created by Atil Samancioglu on 10.07.2019. // Copyright © 2019 Atil Samancioglu. All rights reserved. // import UIKit class ViewController: UIViewController { @IBOutlet weak var firstText: UITextField! @IBOutlet weak var secondText: UITextField! @IBOutlet weak var resultLabel: UILabel! var result = 0 override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view. } @IBAction func sumClicked(_ sender: Any) { if let firstNumber = Int(firstText.text!) { if let secondNumber = Int(secondText.text!) { result = firstNumber + secondNumber resultLabel.text = String(result) } } } @IBAction func minusClicked(_ sender: Any) { if let firstNumber = Int(firstText.text!) { if let secondNumber = Int(secondText.text!) { result = firstNumber - secondNumber resultLabel.text = String(result) } } } @IBAction func multiplyClicked(_ sender: Any) { if let firstNumber = Int(firstText.text!) { if let secondNumber = Int(secondText.text!) { result = firstNumber * secondNumber resultLabel.text = String(result) } } } @IBAction func divideClicked(_ sender: Any) { if let firstNumber = Int(firstText.text!) { if let secondNumber = Int(secondText.text!) { result = firstNumber / secondNumber resultLabel.text = String(result) } } } } |