title: subscript operator in C++
body: <p>is <em>subscript</em> operator <strong>[ ]</strong> <em>unary</em> or <em>binary</em> operator ?</p>
  
  <p>I'm quite new to C++ and was going through operator operloading and wondered 
  is  subscript a <em>unary</em> or <em>binary</em>?</p>