Why increment operator doesn't work?
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points">Undefined Behavior and Sequence Points</a>  </p>
</blockquote>



<pre><code>int a=10;

a=a++;


a=++a;


a=(a++);
</code></pre>

<hr>

<p>Can you guys please explain to me why none of these cases works?</p>
