e. Notice that the condition,
            <code class="computeroutput"><span class="identifier">c</span></code>, is turned to <code class="computeroutput"><span class="keyword">false</span></code> when we get to parse <code class="computeroutput"><span class="number">4</span></code>.
          </p>
<p>
</p>
<pre class="programlisting"><span class="identifier">test_phrase_parser</span><span class="special">(</span><span class="string">"1 2 3 4"</span><span class="special">,</span>
    <span class="special">*