title: C1083: Cannot open include file: math.h: No such file or directory
body: <p>I have a bunch of these errors and am at a dead end.</p>
  
  <p>Found plenty of answers on google but unfortunately none of them work</p>
  
  <p>I am using Visual Studio 2012.</p>
  
  <p>All the files it says is cant find are on my computer in this folder</p>
  
  <pre><code>C:\Program Files\Microsoft Visual Studio 11.0\VC\include
  </code></pre>
  
  <p>Even when I right click on the include statement and click on 'Open Document ' it takes me to the document, so it is clearly there and can be seen</p>
  
  <p>I tried adding the directory to the 'Additional Directories' field in options too but did not solve it.</p>
  
  <p>If I use the include statement with the full path like so :</p>
  
  <pre><code>#include &lt;C:\Program Files\Microsoft Visual Studio 11.0\VC\include\math.h&gt;
  </code></pre>
  
  <p>Then is works but if the math.h file has any include statements I need to add the path to them as well and so on.</p>
  
  <p>Any Idea what is happening and what else I can try?</p>
  
  <p>EDIT: Going to try and create a new project from scratch and see if that helps. It is possible I touched a settings I shouldn't have</p>