swap two variables without using a third variable as an intermediary position
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/756750/swap-the-values-of-two-variables-without-using-third-variable">Swap the values of two variables without using third variable</a>  </p>
</blockquote>



<p>Write a program to swap two variables without using a third variable as an intermediary 
position.</p>

<pre><code>a=2; b=3;
a=a*b; // 6
b=a/b; // 2
a=a/b; // 3
a=3 and b=2
</code></pre>

<p>????is it true,,,i have errors in it</p>
