title: How to fix this Error: #include <gl/glut.h> "Cannot open source file gl/glut.h"
body: <p>I was doing some OpenGL programming in C++.</p>
  
  <p>This is part of my code:</p>
  
  <pre><code>#include &lt;time.h&gt;
  #include &lt;windows.h&gt;
  #include &lt;gl/gl.h&gt;
  #include &lt;gl/glu.h&gt;
  #include &lt;gl/glut.h&gt; &lt;&lt;&lt; Error here "Cannot open source file gl/glut.h"
  </code></pre>
  
  <p>How can I fix this?</p>
  
  <p>EDIT: I am using Microsoft Visual C++ Express Edition. Sorry forgot to mention it</p>