[Code Review] jing-xiang

[wwweert123]

You can try to employ more slap to make your code cleaner. For example, you can abstract the checking of input to checkValidInput(), and the hashing of the pin to createHash()

Nothing much to comment on, except maybe try not to use too much magic literals like "16" and "exit". Very nice code ! 👍 🧠

[jing-xiang]

Thank you!