title: Does At symbol (@) and Dollar Sign ($) has any special meaning in C or C++
body: <p>Recently one of my friend encountered this question in an interview. The interviewer asked him if the special characters like <code>$, @, |, ^, ~</code> have any usage in c or c++ and where.</p>
  
  <p>I know that <code>|, ^ and ~</code> are used as Bitwise OR, XOR and Complement respectively.</p>
  
  <p>But I don't know if <code>@ and  $</code> has any special meaning. If it does, could you please give example where it can be applied?</p>