ass="n">i</span></code>, <code class="language-c++ highlighter-rouge"><span class="n">j</span></code> or, coordinates <code class="language-c++ highlighter-rouge"><span class="n">x</span></code> and <code class="language-c++ highlighter-rouge"><span class="n">y</span></code>). Never name a variable <code class="language-c++ highlighter-rouge"><span class="n">l</span></code>, much too easily confused with the number one.</li>
  <li>
    <p><strong>Verbs for function names:</strong> For functions, the questio