boolean operator in c++
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/2950029/what-does-unsigned-temp3-mean">What does &#39;unsigned temp:3&#39; mean?</a>  </p>
</blockquote>



<p>I saw some c++ code today that used single colons.</p>

<pre><code>bool variable_name : 1;
</code></pre>

<p>what is the difference between this and</p>

<pre><code>bool variable_name = true;
</code></pre>
