quot;{:%Y-%m-%d %H:%M:%S}&quot;</span><span class="p">,</span><span class="w"> </span><span class="n">t</span><span class="p">);</span>
<span class="c1">// Prints: 2010-08-04 12:15:58</span>
</pre></div>
</div>
<p>Using the comma as a thousands separator:</p>
<div class="highlight-c++ notranslate"><div class="highlight"><pre><span></span><span class="cp">#include</span><span class="w"> </span><span class="cpf">&lt;fmt/format.h&gt;</span>

<span class="k">auto</span><span class="w"> </span><span class="n">s<