title: What does the ++ sign mean in programming code?
body: <p>What does the ++ sign mean in this code:</p>
  
  <pre><code>for (var i=0; i &lt; myString.length; i++) {
      alert(myString[i]);
  }
  
  while (x&gt;y) {
      alert ("xrules!");
      y++;
  }
  </code></pre>