title: KDevelop says Included file was not found::iostream
body: <p>Totally new to Kubuntu and KDevelop.  I created a new No GUI(CMake) Simple CMake-based C++ application.</p>
  
  <p>There is a red squiggly line under #include  and I have the error </p>
  
  <p>Included file was not found::iostream</p>
  
  <p>Any answers I found via Google were still too advance for me.  The kind of answer I need is "Click on this menu item, then this, then that, etc."</p>
  
  <p>Thank you!</p>
  
  <p>(EDIT: Added code)</p>
  
  <pre><code>#include &lt;iostream&gt;
  
  int main(int argc, char **argv) {
      std::cout &lt;&lt; "Hello, world!" &lt;&lt; std::endl;
      return 0;
  }
  </code></pre>