">,</span> <span class="number">10.0</span> <span class="special">}};</span>
<span class="keyword">double</span> <span class="identifier">res</span> <span class="special">=</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">accumulate</span><span class="special">(</span> <span class="identifier">make_const_step_iterator_begin</span><span class="special">(</span> <span class="identifier">stepper</span> <span class="special">,</span> <span class="identifier">lore