title: How do I add a space between two concatenated NSStrings?
body: <p>I have three string objects:</p>
  
  <pre><code>NSString *firstName;
  NSString *lastName;
  NSString *fullName;
  </code></pre>
  
  <p>The values for <code>firstName</code> and <code>lastName</code> are received from NSTextFields.</p>
  
  <p>I then want to concatenate the two strings and place the result in <code>fullname.</code></p>
  
  <p>This is the code that I'm using:</p>
  
  <pre><code>fullName = [firstName stringByAppendingString:lastName];
  </code></pre>
  
  <p>However, the result does not put a space between the two names (e.g. JohnSmith).</p>
  
  <p>How do I add in the space? I'd like the result to look like (John Smith).</p>