The program asks the user if they have preregistered for art show tickets. if the user has preregistered, the program should call a function named discount() that displays the message "you are preregistered and qualify for a 5% discount." if the user has not preregistered, the program should call a function named nodiscount() that displays the message "sorry, you did not preregister and do not qualify for a 5% discount." the source code file provided for this lab includes the necessary input statement. comments are included in the file to you write the remainder of the program.