title: If statement without equality, what does that mean? (c)
body: <pre><code>if(tree-&gt;left) 
  
  if(!(*tree))
  </code></pre>
  
  <p>Do they mean:</p>
  
  <pre><code> if(tree-&gt;left==0) 
  
   if((*tree)==1)
  </code></pre>
  
  <p>I did not find anything about this.</p>