lic</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">streambuf</span>
<span class="special">{</span>
<span class="keyword">public</span><span class="special">:</span>
    <span class="keyword">explicit</span> <span class="identifier">fdoutbuf</span><span class="special">(</span> <span class="keyword">int</span> <span class="identifier">fd</span> <span class="special">);</span>
    <span class="comment">//...</span>
<span class="special">};</span>

<span class