C++ - Why set object to null after deleting?
<p>I am looking at the following piece of linked list code I found online:</p>

<pre><code>void DeleteAfter(Node **head){
      if(*head==NULL){
            return;
      }else{
            Node *temp = NULL;
            temp = (*head)-&gt;next;
            (*head)-&gt;next = (*head)-&gt;next-&gt;next;
            delete temp;
            temp=NULL;
      }
}
</code></pre>

<p>I am not that skilled with C++, so this could be a bad question, but why is temp being set to NULL after being deleted? Is this a necessary step?</p>
