def onboardPassengers(bookings):
counter = 1
while counter <= bookings:
print(f"Passenger {counter} on board")
counter += 1
onboardPassengers(4)
def doCountdown(counter):
while counter > 0:
print(counter)
counter -= 1
print("Go!")
doCountdown(3)
def displayStars(rows):
counter = 0
while counter < rows:
print("***")
counter +=1
displayStars(4)