title: What is the difference between increment operator(++) and addition (+) operator?
body: <p>What is the difference between increment operator <code>++</code> and an addition <code>+</code> operator?  Why can't we can use <code>+</code> instead of <code>++</code>?</p>
  <p>What are the advantages of <code>++</code>/<code>--</code> operators over <code>+</code>/<code>-</code>? Where exactly are they applicable?</p>