title: Bitwise operator and single ampersand
body: <blockquote>
  <p><strong>Possible Duplicate:</strong><br />
  <a href="https://stackoverflow.com/questions/7101992/why-do-we-usually-use-not-what-is-the-difference">Why do we usually use <code>||</code> not <code>|</code>, what is the difference?</a></p>
  </blockquote>
  
  <p>Can I use single ampersand like <code>&amp;</code> instead of a bitwise operator like <code>&amp;&amp;</code>?  What kind of differences may arise and is there a specific example to illustrate this issue clearly?</p>