title: what is difference between ++i and i+=1 from any point of view
body: <p>This is a question from kn king's c programming : a modern approach. I can't understand the solution given by him:-</p>
  
  <pre><code>The expression ++i is equivalent to (i += 1). The value of both expressions is i after 
  the increment has been performed.
  </code></pre>
  
  <p>How do I understand this anyway? </p>