d</span><span class="special">::</span><span class="identifier">ostream</span>                        <span class="identifier">base_type</span><span class="special">;</span>

<span class="keyword">public</span><span class="special">:</span>
    <span class="keyword">explicit</span> <span class="identifier">fdostream</span><span class="special">(</span> <span class="keyword">int</span> <span class="identifier">fd</span> <span class="special">)</span>
      <span class="special">:</span> <span class="identifi