title: Change label with button
body: <p>I have no idea how I can get stuck on this simple thing, but I can't get my button to change my label. What have I missed?</p>
  
  <p>FirstViewController.h:</p>
  
  <pre><code>#import &lt;UIKit/UIKit.h&gt;
  
  @interface FirstViewController : UIViewController
  
  @property (weak, nonatomic) IBOutlet UIButton *quoteButton;
  @property (weak, nonatomic) IBOutlet UILabel *quoteLabel;
  
  @end
  </code></pre>
  
  <p>FirstViewController.m:</p>
  
  <pre><code>#import "FirstViewController.h"
  
  @implementation FirstViewController
  
  #pragma mark - User Interaction
  
  - (IBAction)quoteButtonPressed {
    self.quoteLabel.text = @"Hello World";
  }
  
  @end
  </code></pre>