title: eclipse c++ nothing to build error
body: <p>so I was trying to build a C++ project, but then I get this error</p>
  
  <pre><code>**** Build of configuration Release for project p ****
  
  **** Internal Builder is used for build               ****
  Nothing to build for p
  </code></pre>
  
  <p>and I search online for solutions but they're not solving the problem</p>
  
  <ol>
  <li>my files are all in lower case</li>
  <li>my files are properly included in the project, in fact the files were generated from File -> new -> c++ project -> hello world project so they're created by eclipse...</li>
  </ol>
  
  <p>and the code is just the eclipse hello world code...</p>
  
  <pre><code>#include &lt;iostream&gt;
  using namespace std;
  
  int main() {
      cout &lt;&lt; "!!!Hello World!!!" &lt;&lt; endl; // prints !!!Hello World!!!
      return 0;
  }
  </code></pre>
  
  <ol>
  <li>The compiler is installed properly...I got mingw on C:\mingw and the project's includes folder contain all these files properly...</li>
  </ol>
  
  <p>does anyone know what might be wrong?</p>