pre><p>
    </p><p>
      However, note that the template parameter <code class="computeroutput"><span class="keyword">char</span></code>
      must be manually specified when invoking the function as in <code class="computeroutput"><span class="identifier">f</span><span class="special">&lt;</span><span class="keyword">char</span><span class="special">&gt;(</span><span class="identifier">a</span><span class="special">)</span></code>. In fact,
      when the <code class="computeroutput"><a class="link" href=