title: How to save an integer in two digits in Dart
body: <p>How can I save an integer in two digits in Dart?<br><br></p>
  
  <pre><code>int i = 3;
  String s = i.toString();
  print(s);
  </code></pre>
  
  <p>The result should be <strong>03</strong> and  not <strong>3</strong></p>