//
//  ViewController.swift
//  iOS2
//
//  Created by Michael Wilhelm on 3/04/2016.
//  Copyright © 2016 Michael Wilhelm. All rights reserved.
//

import UIKit

class ViewController: UIViewController {
    
     var nr:Int32=0
    // UI-Attribute

    @IBOutlet weak var tInputA: UITextField!
    
    @IBOutlet weak var tInputB: UITextField!
    
    @IBOutlet weak var tOutputC: UITextField!
    
    @IBOutlet var tInputBStrong: UITextField!
    @IBOutlet var tInputAStrong: UITextField!
    @IBOutlet var tOutputCStrong: UITextField!
    @IBOutlet weak var lblErgebnis: UILabel!
    
    @IBOutlet var rbOperation: UISegmentedControl!
    
    // UI-EventMethoden
    
    
    @IBAction func bnAdd_OnClick(sender: UIButton) {
        let sA:String =  tInputAStrong.text!
        let sB:String =  tInputBStrong.text!
        if Int(sA)==nil || Int(sB)==nil {
          tOutputCStrong.text="Fehlerhafte Eingabe"
        }
        else {
            let a:Int =  Int(sA)!
            let b:Int =  Int(sB)!
            var c:Int=0
            switch (rbOperation.selectedSegmentIndex) {
            case 0: c=a+b
            case 1: c=a-b
            case 2: c=a*b
            case 3: if b==0 {
                    }
                    else {
                     c=a/b
                    }
            default: c=0
            }
          tOutputCStrong.text!=String(c)
        }
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


}