Can someone explain this Binary tree code to me : <p><a href="https://i.stack.imgur.com/XQUHZ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/XQUHZ.png" alt="enter image description here"></a></p>

<p>I only understand the first step.  Where it says that *tmp = the node containing the data (7).</p>
