oblem writing to the stream.

<hr />
<pre>
template &lt;typename Char, typename Traits, typename Block, typename Alloc&gt;
std::basic_istream&lt;Char,Traits&gt;&amp;
<a id=
"op-in">operator&gt;&gt;</a>(std::basic_istream&lt;Char,Traits&gt;&amp; is, dynamic_bitset&lt;Block, Alloc&gt;&amp; b)
</pre>

<b>Effects:</b> Extracts a <tt>dynamic_bitset</tt> from an input stream.
<br /><br />
 <i>Definitions:</i><br /><br />
 Let <i>Tr</i> be the traits_type of <i>is</i>. Then:
 <ol>
 <li>
 A (non-eof) character <tt>