title: Basic segmented control not working
body: <p>I am trying to implement a segmented control into a view controller but every time I try to tap the controller on the simulator, the app crashes. But I really don't know what is from with my code. For added context: Trying to change four labels with four segments. </p>
  
  <pre><code>//
  //  AboutViewController.swift
  //  Yiives
  //
  //  Created by Patrick van der Nat on 7/22/17.
  //  Copyright © 2017 Origen. All rights reserved.
  //
  
  import UIKit
  
  class AboutViewController: UIViewController {
      @IBOutlet weak var segmentedControl: UISegmentedControl!
      @IBOutlet weak var textLabel: UILabel!
  
      @IBAction func indexChanged(_ sender: Any) {
          switch segmentedControl.selectedSegmentIndex
          {
          case 0:
              textLabel.text = "First Segment Selected";
          case 1:
              textLabel.text = "Second Segment Selected";
          case 2:
              textLabel.text = "Third Segment Selected";
          case 3:
              textLabel.text = "Fourth Segment Selected";
          default:
              break
          }
      }
  }
  </code></pre>
  
  <p>And here is the error that is given: </p>
  
  <pre>
  2017-07-22 20:02:31.059244+0200 Yiives[369:50130] -[Yiives.AboutViewController segmentControl:]: unrecognized selector sent to instance 0x100b37b40
  2017-07-22 20:02:31.060083+0200 Yiives[369:50130] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[Yiives.AboutViewController segmentControl:]: unrecognized selector sent to instance 0x100b37b40'
  *** First throw call stack:
  (0x183a1afe0 0x18247c538 0x183a21ef4 0x183a1ef54 0x18391ad4c 0x189b81010 0x189b80f90 0x189b6b504 0x189c9a764 0x189d522e0 0x189b80390 0x189b7b728 0x189b4c33c 0x18a346014 0x18a340770 0x18a340b9c 0x1839c942c 0x1839c8d9c 0x1839c69a8 0x1838f6da4 0x185360074 0x189bb1058 0x1000a8544 0x18290559c)
  libc++abi.dylib: terminating with uncaught exception of type NSException
  (lldb) 
  </pre>