title: cannot open source file "stdafx.h"
body: <p>I have two include file headers</p>
  
  <pre><code>#include "stdafx.h"
  #include "psapi.h"
  </code></pre>
  
  <p>However it gives a cannot open source file "stdafx.h" compile time error.  I am using Visual Studios 2010.  Is "stdafx.h" even necessary?  I think so because the program cannot compile if i take it away.</p>