title: What difference does it make when I include <limits> or <limits.h> in my c++ code
body: <p>Can somebody please explain this?</p>
  
  <pre><code>    #include &lt;iostream&gt;
      #include &lt;limits.h&gt;
  </code></pre>
  
  <p>or</p>
  
  <pre><code>    #include &lt;iostream&gt;
      #include &lt;limits&gt;
  </code></pre>