ss="nv">enddo</span>
 <span class="k">end</span> <span class="nv">program</span> <span class="nv">demo_isdigit</span>
</code></pre></div>

<p>Expected output:</p>
<div class="codehilite"><pre><span></span><code>    <span class="k">For</span> <span class="nv">string</span>[<span class="mi">1</span> <span class="mi">2</span> <span class="mi">3</span> <span class="mi">4</span> <span class="mi">5</span> ] <span class="nv">T</span>
    <span class="k">For</span> <span class="nv">string</span>[<span class="nv">le