title: Loop iterator naming convention
body: <p>We know that, somehow, we use <code>i</code> and <code>j</code> variables in loops very commonly. If one need a double <code>for</code> loop, it's very likely to use something like the following:</p>
  
  <pre><code>for (int i = 0; i &lt; n; i++)
  {
      for (int j = 0; j &lt; m; j++)
      {
          // do some stuff...
      }
  }
  </code></pre>
  
  <p>However, if I need a third <code>for</code> loop in these loops, I don't have any naming convention for the third iterator. I, likely use the following variables: <code>r</code>, <code>k</code>, <code>ii</code>, <code>jj</code> etc...</p>
  
  <p>Is there a naming convention for the third (and so on...) loop's iterator?</p>