Players will most likely want to quit NyetHack at some point, and currently NyetHack offers no way to do that.
Your challenge is to fix this.
When a user enters “quit” or “exit,” NyetHack should display a farewell message to the adventurer and terminate.
Hint: Remember that, currently, your while loop executes forever – a significant part of solving this puzzle is to end that loop conditionally.