title: Difference Between Double's Notation
body: <p>On the learncpp.com there is advice to write doubles as:</p>
  <pre><code>double num {5.0}
  </code></pre>
  <p>Is there any real difference between that and:</p>
  <pre><code>double num {5}
  </code></pre>
  <p>It seems that my compiler (VS 2019) treats those as equivalent.</p>