title: How to use enum in C?
body: <p>I have read a lot of documents about enum but I still can't understand the enum clearly.</p>
  
  <p>I have read about the enum syntax, but there are still things that make me wonder:</p>
  
  <pre><code>1. How does Enum work? I need more than 1 example of how to use enum? And when should I use it?
  2. If I have more than 1 enum, how do I run the loop with each enum.
  </code></pre>
  
  <p>Can someone give me a detailed explanation? Thank you</p>