p>
  </li>
  <li>
    <p><strong>Use of fallthrough in switch cases:</strong>  A switch case should almost always end with a <code class="language-c++ highlighter-rouge"><span class="k">break</span></code> or <code class="language-c++ highlighter-rouge"><span class="k">return</span></code> that prevents continuing into the subsequent case. In the very rare case that you intend to fallthrough, add a comment to make that clear. Accidental fallthrough is the source of many a difficult bug.</p>

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