Notes
This function is in beta test. Please help improve it in the issues
here.
Your Answer
Welcome to the library management system, please type your commands. > There is no book in the system. > There is no customer in the system. > There is no book in the system. > There is no customer in the system. > There is no customer in the system. > There is no customer in the system. > There is no book in the system. > There is no book in the system. > There is no book in the system. > Exit the system!
JOJ Answer
Welcome to the library management system, please type your commands. > There is no book in the system. > There is no customer in the system. > There is no book in the system. > There is no customer in the system. > There is no customer in the system. > There is no customer in the system. > There is no book in the system. > There is no book in the system. > There is no book in the system. > Exit the system!