title: How to comment out multiple-llines comment in visaul-Studio 2015?
body: <p>On Visual studio 2015 C++ compiler If I want to comment out multiple lines then I select them and press <code>CTRL + K CTRL + C</code> and to un-comment them <code>CTRL + K CTRL U</code>.</p>
  
  <p>But when commenting them out the compiler sometimes comment them with <code>multiple-line comment</code> and sometimes comment them line by line:</p>
  
  <pre><code>/*int x;
  x = 0;
  cout &lt;&lt; x &lt;&lt; endl; */
  </code></pre>
  
  <p>And sometimes:</p>
  
  <pre><code>//int x;
  //x = 0;
  //cout &lt;&lt; x &lt;&lt; endl; */
  </code></pre>
  
  <p>With the same shortcut?!!</p>
  
  <p>I want how to use the both notations. Thank you.</p>