#functions go here

def yes_no (question):
  while True:
    response = input(question).lower()

    if response == 'yes' or response == 'y':
        return "yes"
    elif response == 'no' or response == 'n':
        return "no"
    else:
        print("please enter yes/no")


def instructions():
    """prints instructions"""

    print("""
*** Instructions ***
    
Roll the dice and try to win!
    """)

#main routine

#ask the user if they want to see the instructions
want_instructions = yes_no("Do you want to see the instructions? ")

#Display the instructions if the user responded with yes
if want_instructions == 'yes':
    instructions()

print()
print("Program continues")