    of the parser is convertible to the type provided. The following example
          shows how a synthesized parser attribute (the <code class="computeroutput"><span class="keyword">int</span></code>
          value) is extracted by calling the API function <code class="computeroutput"><span class="identifier">qi</span><span class="special">::</span><span class="identifier">parse</span></code>:
        </p>
<pre class="programlisting"><span class="keyword">int</span> <span class="identifier">value</span> 