rnel function to output a message:</p><pre class="m-code"><span class="cp">#include</span><span class="w"> </span><span class="cpf">&lt;taskflow/taskflow.hpp&gt;</span>
<span class="cp">#include</span><span class="w"> </span><span class="cpf">&lt;taskflow/cudaflow.hpp&gt;</span><span class="c1">  </span>

<span class="kt">int</span><span class="w"> </span><span class="nf">main</span><span class="p">(</span><span class="kt">int</span><span class="w"> </span><span class="n">argc</span><span class="p">,</span>