title: Changing values of pointers
body: <p>I have an object like this:</p>
  
  <pre><code>Node&lt;T&gt; *s = object;
  setLength(&amp;s);
  
  void setLength(Node&lt;T&gt; *temp)
  {  ..... }
  </code></pre>
  
  <p>This does not seem to change value of s. How do I modify s?</p>