title: NSString stringWithFormat
body: <p>I don't know what I am missing here. I am trying to concatenate strings using <code>[NSString stringWithFormat]</code> function. This is what I am doing.</p>
  
  <pre><code>NSString *category = [row objectForKey:@"category"];
  NSString *logonUser = [row objectForKey:@"username"];
  user.text = [NSString stringWithFormat:@"In %@ by %@", category, logonUser];
  </code></pre>
  
  <p>The problem here is that it always print only one variable. Say if there is "Sports" in category and "Leo" in logonUser it will print "In Sports" and skip the remaining text. It should print "In Sports by Leo".</p>