rticular you will be asked to write the following function</p>

<p><code class="language-c++ highlighter-rouge"><span class="kt">int</span> <span class="n">countNumbers</span><span class="p">(</span><span class="n">string</span> <span class="n">filename</span><span class="p">)</span></code></p>

<p>When given the following file, named <code class="language-c++ highlighter-rouge"><span class="n">numbers</span><span class="p">.</span><span class="n">txt</span></code>, as input, your function should print 1 wh