What is the difference between including iostream and including iostream.h?
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/2976477/difference-between-iostream-and-iostream-h">Difference between iostream and iostream.h</a>  </p>
</blockquote>



<p>My professor said that the following:</p>

<pre><code>#include &lt;iostream.h&gt;  
</code></pre>

<p>is the same as:</p>

<pre><code>#include &lt;iostream&gt;
using namespace std;  
</code></pre>

<p>I'm a bit confused. What is the difference between <code>iostream</code> and <code>iostream.h</code>?</p>
