title: Combining two strings
body: <p>I don't know how to combine two <code>NSString</code>s. I've a label, <code>rohstoffe</code> and want to set its text with two strings, but the label only shows the last string.</p>
  
  <p>Why?</p>
  
  <p>Here is my code:</p>
  
  <pre><code>NSString *n = @"A";
  NSString *m = @"B";
  self.rohstoffe.text = (@"%d und %d", n, m);
  </code></pre>