lass="special">,</span> <span class="identifier">v</span><span class="special">);</span>                                       <span class="comment">// data read from file</span>

    <span class="keyword">if</span> <span class="special">(!</span><span class="identifier">result</span><span class="special">)</span> <span class="special">{</span>
        <span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="str