title: use of int32_t in c or c++?
body: <p>I have two questions in my mind now:</p>
  
  <ol>
  <li><p>Firstly, why do we need int32_t as we already have different variation for it like short int unsigned int and etc.</p></li>
  <li><p>Secondly does the use of this type of fixed size types makes programs portable?</p></li>
  </ol>