title: Eclipse c++ include header twice Error
body: <p>I have the following files:</p>
  
  <pre><code>Polygon.h
  Polygon.cpp
  Rectangle.cpp
  Triangle.cpp
  </code></pre>
  
  <p>Polygon.h is wrapped with </p>
  
  <pre><code>#ifndef __POLYGON_H
  #define __POLYGON_H
  #endif
  </code></pre>
  
  <p>Problem is: When I click 'Build All' Im getting an error in Rectangle and Triangle cpp files (they dont get a header file) alternately, its either one of them but never both.</p>
  
  <p>Error's description: </p>
  
  <blockquote>
    <p>C1083: Cannot open include file: 'Polygon.h': No such file or directory </p>
  </blockquote>
  
  <p>Im using it twice because both Rectangle and Triangle inherit from Polygon, obviously.</p>
  
  <p><strong>EDIT</strong></p>
  
  <p>The including is done using <code>#include &lt;Polygon.h&gt;</code></p>
  
  <p>Halp?</p>