Python
10 Green Bottles
By Rob Poulter
# 10 Green Bottles in Python # Initial number of bottles num_bottles = 10 # To get the initial number from the user (with no error checking) # uncomment the following line: # num_bottles = input("How many bottles are on the wall? ") # Loop until there are no bottles left # Why did I use a while loop? Who knows. For loops people! while (num_bottles > 0): if (num_bottles == 1): plural = "" # Don't include the 's' in bottles bottles_left = "NO" # how many bottles left? next_plural = "s" # is the next amount of bottles a plural? else: plural = "s" bottles_left = str(num_bottles - 1) # change the number left next time to a string if (num_bottles == 2): next_plural = "" # if there are 2 bottles now there will be one bottle next time else: next_plural = "s" print "%d green bottle%s, sitting on the wall!" % (num_bottles, plural) print "And if one green bottle should accidentally fall" print "There'd be %s green bottle%s sitting on the wall!" % (bottles_left, next_plural) num_bottles -= 1 # Subtract one from the bottle count