title: array of vectors c++ add edit remove search
body: <p>I want to write a program for a bunch of users (not specific number of them) that each have contact details which contains username, phone number and email(all strings) , so I need three columns(const);</p>
  
  <pre><code>vector&lt;string&gt;info[3];
  </code></pre>
  
  <p>So my question is how can I add and remove rows(each user is one row) to this or search and edit them? 
  search[I want each row to have a number and search them by that number]</p>