title: The system cannot find the file specified Visual Studio 2015
body: <p>I just started programming, but I keep on getting problems with headers and stuff.
  So, whenever I try and run the code</p>
  
  <pre><code> // ConsoleApplication4.cpp : Defines the entry point for the console      application.
  #include "stdafx.h"
  #include "std_lib_facilities.h"
  
  int main()
  {
      return 0;
  }
  </code></pre>
  
  <p>I get this warning saying </p>
  
  <blockquote>
    <p><em>Unable to start program 'C:\Users\Gebruiker\documents\visual studio 2015\Projects\ConsoleApplication4\Debug\ConsoleApplication4.exe'.
    The system cannot find file specified.</em></p>
  </blockquote>
  
  <p>Additionally, the Build outputs:</p>
  
  <pre><code>1&gt;------ Build started: Project: ConsoleApplication4, Configuration: Debug Win32 ------
  1&gt;ConsoleApplication4.cpp
  1&gt;c:\program files (x86)\microsoft visual studio 14.0\vc\include\hash_map(17): error C2338: &lt;hash_map&gt; is deprecated and will be REMOVED. Please use &lt;unordered_map&gt;. You can define _SILENCE_STDEXT_HASH_DEPRECATION_WARNINGS to acknowledge that you have received this warning.
  ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========_
  </code></pre>
  
  <p>As you might've noticed, I'm following Bjarne Stroustrup's book on this, and he doesn't specify how to deal with this at all.</p>
  
  <p>Anyways, the <em>std_lib_facilities.h</em> header is in the same folder as <em>ConsoleApplication.cpp</em>, just as he tells me to do.</p>
  
  <p>I don't actually think this has anything to do with this program in particular, since I face this problem with all the projects I make. </p>
  
  <p>Oh yes, I have to say that I've checked multiple related questions to this, but the questions didn't match mine. </p>
  
  <p>I also tried to <code>#include "../std_lib_facilities.h"</code> and <code>#include "../../std_lib_facilities.h"</code>, with no results.(Same with <em>stdafx.h</em>) I've tried "building" the program, but I don't actually know what that does, and if I should build the solution or the cpp, and when to debug.... </p>
  
  <p>The answer surely isn't in the book, since I've continued on to chapter 8, not doing the exercises because I cannot get the thing to work.</p>
  
  <p>(Please also tell me if I messed something up in this question, i.e. that I need to talk less, give more details or something)</p>