s="special">);</span>
    <span class="identifier">bg</span><span class="special">::</span><span class="identifier">set</span><span class="special">&lt;</span><span class="number">1</span><span class="special">&gt;(</span><span class="identifier">point</span><span class="special">,</span> <span class="number">2</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="st