family: monospace; font-size: 11px; width: 600px; background-color: #fff9e7;"><span style="color: #236fa1;"><em>// Recall that we pass a <strong>reference</strong> to our root pointer because we might want to<br />// change what this pointer is pointing to. That happens if we end up deleting the</em></span><br /><span style="color: #236fa1;"><em>// root node in this function call, in which case we want that pointer back in our<br />// calling function to be set to nullptr.</em></span><strong><br />void</str