My interviewer said my code assignment was bad, and lacked abstract thinking

The story

“Bro last week my assignment got rejected from an interview” My friend seemed very disappointed with the interview result.

“So what’s the code assignment?” I asked.

“It’s a bank. so the code assignment is an ATM simulator, console application, parse arguments, deposit, withdraw, transfer money” He said.

“This application you should have done in a few hours and with nice test cases written!” I know he is good…