title: What are these .pch and .ncb files in visual studio?
body: <p>I have several small Visual Studio Projects (C++). And many of these projects have .ncb and .pch extension files. Those files are quite big, and they are consuming a lot of space (over 100 mb).</p>
  
  <p>What are these files?</p>
  
  <p>If those files are not that important can I delete them? Can I stop them from being created?</p>