API tools faq
paste
Advertisement
ZTCYING

Lab2- calculator

ZTCYING
May 4th, 2024 (edited)
72
0
Never
Add comment
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
Swift 2.05 KB | None | 0 0
raw download clone embed print report
  1. //
  2. //  ViewController.swift
  3. //  Calculator
  4. //
  5. //  Created by Sabin Tabirca on 29/01/2024.
  6. //
  7.  
  8. import UIKit
  9.  
  10. class ViewController: UIViewController {
  11.    
  12.     // outlet and actions
  13.    
  14.     @IBOutlet weak var screen: UITextField!
  15.    
  16.     @IBAction func clearAction(_ sender: Any) {
  17.         // clear screen and reset vars
  18.         screen.text = ""
  19.          
  20.     }
  21.    
  22.     @IBAction func equalAction(_ sender: Any) {
  23.         // get the current value
  24.         let currentValue = screen.text!
  25.        
  26.         // convert them
  27.         let value1 = Double(screenValue)!
  28.         let value2 = Double(currentValue)!
  29.         var result : Double = 0
  30.        
  31.         switch oper{
  32.         case "+":
  33.             result = value1 + value2
  34.             screen.text = String(result)
  35.            
  36.         case "-":
  37.             result = value1 - value2
  38.             screen.text = String(result)
  39.            
  40.         case "*":
  41.             result = value1 * value2
  42.             screen.text = String(result)
  43.         case "/":
  44.             if value2 != 0{
  45.                 result = value1 / value2
  46.                 screen.text = String(result)}
  47.             else{
  48.                 screen.text = "ERROR"
  49.             }
  50.            
  51.         default:break
  52.         }
  53.        
  54.        
  55.     }
  56.    
  57.     @IBAction func operationAction(_ sender: Any) {
  58.         // memorise the operation to compute
  59.         oper = ((sender as! UIButton).titleLabel?.text)!
  60.        
  61.         // memorise teh screen value
  62.         screenValue = screen.text!
  63.        
  64.         // clear the screen
  65.         screen.text = ""
  66.     }
  67.    
  68.     @IBAction func digitAction(_ sender: Any) {
  69.         // append the button label to screen's text
  70.         let screenText = screen.text
  71.         let digit = (sender as! UIButton).titleLabel?.text
  72.         screen.text = "\(screenText!)\(digit!)"
  73.     }
  74.    
  75.    
  76.     // vars
  77.     var oper = ""
  78.     var screenValue = ""
  79.  
  80.     override func viewDidLoad() {
  81.         super.viewDidLoad()
  82.         // Do any additional setup after loading the view.
  83.     }
  84.  
  85.  
  86. }
  87.  
  88.  
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement
Public Pastes
Advertisement
We use cookies for various purposes including analytics. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy.  OK, I Understand
Not a member of Pastebin yet?
Sign Up, it unlocks many cool features!