#functions go here

def yes_no(question):

    """Makes a yes or no question"""

    while True:

        response = input(question).lower()

        # check what the user answers yes / no / y / n
        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 ****

Beat me in rock paper scissors to win!
    """)

    
def int_check():
    #Checks users enter an integer more than / equal to 13

    error = "Please enter an integer more than / equal to 13."

    while True:
        try:
            response = int(input("What is the game goal? "))

            if response < 13:
                print(error)
            else:
                return response

        except ValueError:
            print(error)

#main routine starts here
game_goal = int_check()
print(game_goal)

#Main routine

#ask the user if they want instruction (check they say yes/no)
want_instructions = input("Do you want to see the instructions ").lower()

# Display the instructions if the user wants to see them
if want_instructions == "yes":
    instructions()

print()
print("Program continues")