99 Bottles of Beer

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# There's more than one 'nice' way to do it ;-)
# www.ruby-lang.org

puts; puts "   It's beer song time!"; puts
 
def bottles(n)
  n == 1 ? "#{n} bottle" : "#{n} bottles"
end
 
@count = 99

@count.downto(1)  {
puts <<BEERSONG
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   #{bottles(@count)} of beer on the wall
   #{bottles(@count)} of beer
   Take one down, pass it around
   #{bottles(@count -= 1)} of beer on the wall
BEERSONG
}
 
puts "~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~"
puts; puts "   No more beer on the wall :-("

Alternative Versions

Version	Author	Date	Comments	Rate
Using continuations, singleton classes	Victor Borja	09/15/06	9
object-oriented version	Mike Gertz	04/20/05	2
minimal version	Anonymous	05/18/05	3
shows inheritance, iterators, yield, etc	Kian Wright	06/10/05	0
In words	Daniel Straight	07/10/06	1
wall-based OO version	Kevin Baird	07/07/05	2
monkeypatch and anonymous procs	J. B. Rainsberger	04/04/07	0
Readably re-opening Integer, teetotaller	Eric Budd	01/06/08	0

Comments

 Ivan said on 08/08/05 22:18:44

I love Ruby...

Looks great, good work.

 AEDE said on 10/28/05 15:14:14

fine work...

I just personnaly prefer the %s syntax for s management

def bottles(n); "#{n} bottle%s" % n > 1 ? 's' : ''; end

 binary42 said on 03/10/06 20:26:38

This example works fine but the use of @counter is somewhat ugly and unneeded. An alternate version might look like this:

puts "\n It's beer song time!\n"

bottles = lambda {|n| n == 1 ? "#{n} bottle" : "#{n} bottles"}
sep = "~" * 32

99.downto 1 do |n|
puts "#{sep}
#{bottles[n]} of beer on the wall
#{bottles[n]} of beer
Take one down, pass it around
#{bottles[n - 1]} of beer on the wall"
end

puts sep
puts "\n No more beer on the wall :-("

That might be a bit better... but as you said, there is more than one way to do it.

 April Bradshaw said on 09/29/06 19:31:00

Thank you so much for this help. I've been looking for the code for days now and couldn't find anything to work.

 Ivan Aleman said on 10/17/06 22:50:25

Hello, here's my version, keep in mind that I been 24 hrs learning Ruby :P

puts 'time to sing 99 bottles'.capitalize
bottles = 99
while bottles != 0
puts bottles.to_s + ' bottles of beer on the wall, ' + bottles.to_s + ' bottless of beer.'
bottles = bottles - 1
puts 'Take one and pass it around, ' + bottles.to_s + ' of beer on the wall.'
puts ''
end
if bottles == 0
puts 'No more beer, and we\'re not drunk yet.'
end

 Scott Sweeney said on 12/05/06 21:11:15

I used the same code as Ivan Aleman above me, only I fixed the code so that at the end of the song it correctly says "2 bottles," "1 bottle," and "0 bottles," respectively.

Scott
--------------------------------------------------------------------------

bottles = 99

while bottles != 0 && bottles != 1 && bottles != 2
puts bottles.to_s + ' bottles of beer on the wall, ' + bottles.to_s + ' bottles of beer.'
bottles = bottles - 1
puts 'Take one down and pass it around, ' + bottles.to_s + ' bottles of beer on the wall.'
puts ''
end

if bottles == 2
puts bottles.to_s + ' bottles of beer on the wall, ' + bottles.to_s + ' bottles of beer.'
bottles = bottles - 1
puts 'Take one down and pass it around, ' + bottles.to_s + ' bottle of beer on the wall.'
puts ''
end

if bottles == 1
puts bottles.to_s + ' bottle of beer on the wall, ' + bottles.to_s + ' bottle of beer.'
bottles = bottles - 1
puts 'Take the last one down and pass it around, ' + bottles.to_s + ' bottles of beer on the wall.'
puts ''
end

if bottles == 0
puts 'No more beer, and we\'re not drunk yet.'
end

 Comrade Smack said on 05/24/07 21:36:38

I think there's a more fun solution.

require 'net/http'
h = Net::HTTP.new('www.99-bottles-of-beer.net', 80)
resp, data = h.get('/lyrics.html', nil)
byte = data.each_byte {|y|}

if resp.message == "OK"
for x in 3516..16297
putc byte[x]
end
end

 jeffman said on 07/12/07 20:39:46

# 99 bottles of beer on the wall
bottles = 100

100.times do
bottles -= 1
if bottles != 0
puts bottles.to_s + " bottles of beer on the wall"
puts bottles.to_s + " bottles of beer"
puts "take one down and pass it around "
puts (bottles - 1).to_s + " bottles of beer on the wall"
puts "__"
end # end if
end

 Kris Hedges said on 01/08/08 05:54:10

Here it is via iterator.

101.times do |beers|
if beers >= 100
99.times do
beers -=1
puts beers.to_s + " bottles of beer on the wall!"
puts beers.to_s + " bottles of beer!"
puts "Take one down pass it around"
puts (beers-1).to_s + " bottles of beer on the wall!"
end
elsif
beers += 100
end
end

 Kedar Mhaswade said on 01/01/09 10:38:44

This program is wrong since it does not write the authentic beer song. The last lines are printed as:
1 bottle of beer
Take one down, pass it around
0 bottles of beer on the wall

and they should be:

1 bottle of beer on the wall,1 bottle of beer.
Take one down and pass it around,no more bottles of beer on the wall.


Here is a better version, gotten to by reading only up to Chapter 6 in Chris Pine's excellent tutorial at http://pine.fm/LearnToProgram/?Chapter=06

#!/usr/bin/ruby
bottles=99
suffixes=['no more bottles', '1 bottle']
i=2
while i <= bottles
suffixes=suffixes+[i.to_s + ' bottles']
i=i+1
end
while bottles > 0
puts suffixes[bottles] + " of beer on the wall," + suffixes[bottles] + " of beer."
puts "Take one down and pass it around," + suffixes[bottles-1] + " of beer on the wall."
bottles=bottles-1
end
puts "No more bottles of beer on the wall, no more bottles of beer."
puts "Go to the store and buy some more, 99 bottles of beer on the wall."

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