プログラミング学習の記録 651.3 7章(フロー制御)の練習問題7.5、「99 Bottles of Beer on the Wall」 『初めてのプログラミング 第2版』(Chris Pine 著、長尾 高弘 訳、オライリー・ジャパン、2010年、ISBN978-4-87311-469-9)

開発環境

• Mac OS X Snow Leopard (OS)
• TextWrangler(Text Editor) (いずれはBBEditを入手したい！)
• Script言語:Ruby

『初めてのプログラミング 第2版』(Chris Pine　著、長尾 高弘　訳、オライリー・ジャパン、2010年、ISBN978-4-87311-469-9)の 7章(フロー制御),　7.5(練習問題)、「99 Bottles of Beer on the Wall」を解いてみる。

 

「99 Bottles of Beer on the Wall」

せっかくなので問題のように5本からではなく99本から。

コード(TextWrangler)

n = 99 while n >= 2 puts n.to_s + ' bottles of beer on the wall, ' + n.to_s + ' bottles of beer!' n = n - 1 puts 'Take one down, pass it around, ' + n.to_s + ' bottles of beer on the wall!' end puts n.to_s + ' bottle of beer on the wall, ' + n.to_s + ' bottle of beer!' puts 'Take one down, pass it around, no more bottles of beer on the wall!'

入出力結果(Terminal)

$ ruby ruby_program.rb 99 bottles of beer on the wall, 99 bottles of beer! Take one down, pass it around, 98 bottles of beer on the wall! 98 bottles of beer on the wall, 98 bottles of beer! Take one down, pass it around, 97 bottles of beer on the wall! 97 bottles of beer on the wall, 97 bottles of beer! Take one down, pass it around, 96 bottles of beer on the wall! 96 bottles of beer on the wall, 96 bottles of beer! Take one down, pass it around, 95 bottles of beer on the wall! 95 bottles of beer on the wall, 95 bottles of beer! Take one down, pass it around, 94 bottles of beer on the wall! 94 bottles of beer on the wall, 94 bottles of beer! Take one down, pass it around, 93 bottles of beer on the wall! 93 bottles of beer on the wall, 93 bottles of beer! Take one down, pass it around, 92 bottles of beer on the wall! 92 bottles of beer on the wall, 92 bottles of beer! Take one down, pass it around, 91 bottles of beer on the wall! 91 bottles of beer on the wall, 91 bottles of beer! Take one down, pass it around, 90 bottles of beer on the wall! 90 bottles of beer on the wall, 90 bottles of beer! Take one down, pass it around, 89 bottles of beer on the wall! 89 bottles of beer on the wall, 89 bottles of beer! Take one down, pass it around, 88 bottles of beer on the wall! 88 bottles of beer on the wall, 88 bottles of beer! Take one down, pass it around, 87 bottles of beer on the wall! 87 bottles of beer on the wall, 87 bottles of beer! Take one down, pass it around, 86 bottles of beer on the wall! 86 bottles of beer on the wall, 86 bottles of beer! Take one down, pass it around, 85 bottles of beer on the wall! 85 bottles of beer on the wall, 85 bottles of beer! Take one down, pass it around, 84 bottles of beer on the wall! 84 bottles of beer on the wall, 84 bottles of beer! Take one down, pass it around, 83 bottles of beer on the wall! 83 bottles of beer on the wall, 83 bottles of beer! Take one down, pass it around, 82 bottles of beer on the wall! 82 bottles of beer on the wall, 82 bottles of beer! Take one down, pass it around, 81 bottles of beer on the wall! 81 bottles of beer on the wall, 81 bottles of beer! Take one down, pass it around, 80 bottles of beer on the wall! 80 bottles of beer on the wall, 80 bottles of beer! Take one down, pass it around, 79 bottles of beer on the wall! 79 bottles of beer on the wall, 79 bottles of beer! Take one down, pass it around, 78 bottles of beer on the wall! 78 bottles of beer on the wall, 78 bottles of beer! Take one down, pass it around, 77 bottles of beer on the wall! 77 bottles of beer on the wall, 77 bottles of beer! Take one down, pass it around, 76 bottles of beer on the wall! 76 bottles of beer on the wall, 76 bottles of beer! Take one down, pass it around, 75 bottles of beer on the wall! 75 bottles of beer on the wall, 75 bottles of beer! Take one down, pass it around, 74 bottles of beer on the wall! 74 bottles of beer on the wall, 74 bottles of beer! Take one down, pass it around, 73 bottles of beer on the wall! 73 bottles of beer on the wall, 73 bottles of beer! Take one down, pass it around, 72 bottles of beer on the wall! 72 bottles of beer on the wall, 72 bottles of beer! Take one down, pass it around, 71 bottles of beer on the wall! 71 bottles of beer on the wall, 71 bottles of beer! Take one down, pass it around, 70 bottles of beer on the wall! 70 bottles of beer on the wall, 70 bottles of beer! Take one down, pass it around, 69 bottles of beer on the wall! 69 bottles of beer on the wall, 69 bottles of beer! Take one down, pass it around, 68 bottles of beer on the wall! 68 bottles of beer on the wall, 68 bottles of beer! Take one down, pass it around, 67 bottles of beer on the wall! 67 bottles of beer on the wall, 67 bottles of beer! Take one down, pass it around, 66 bottles of beer on the wall! 66 bottles of beer on the wall, 66 bottles of beer! Take one down, pass it around, 65 bottles of beer on the wall! 65 bottles of beer on the wall, 65 bottles of beer! Take one down, pass it around, 64 bottles of beer on the wall! 64 bottles of beer on the wall, 64 bottles of beer! Take one down, pass it around, 63 bottles of beer on the wall! 63 bottles of beer on the wall, 63 bottles of beer! Take one down, pass it around, 62 bottles of beer on the wall! 62 bottles of beer on the wall, 62 bottles of beer! Take one down, pass it around, 61 bottles of beer on the wall! 61 bottles of beer on the wall, 61 bottles of beer! Take one down, pass it around, 60 bottles of beer on the wall! 60 bottles of beer on the wall, 60 bottles of beer! Take one down, pass it around, 59 bottles of beer on the wall! 59 bottles of beer on the wall, 59 bottles of beer! Take one down, pass it around, 58 bottles of beer on the wall! 58 bottles of beer on the wall, 58 bottles of beer! Take one down, pass it around, 57 bottles of beer on the wall! 57 bottles of beer on the wall, 57 bottles of beer! Take one down, pass it around, 56 bottles of beer on the wall! 56 bottles of beer on the wall, 56 bottles of beer! Take one down, pass it around, 55 bottles of beer on the wall! 55 bottles of beer on the wall, 55 bottles of beer! Take one down, pass it around, 54 bottles of beer on the wall! 54 bottles of beer on the wall, 54 bottles of beer! Take one down, pass it around, 53 bottles of beer on the wall! 53 bottles of beer on the wall, 53 bottles of beer! Take one down, pass it around, 52 bottles of beer on the wall! 52 bottles of beer on the wall, 52 bottles of beer! Take one down, pass it around, 51 bottles of beer on the wall! 51 bottles of beer on the wall, 51 bottles of beer! Take one down, pass it around, 50 bottles of beer on the wall! 50 bottles of beer on the wall, 50 bottles of beer! Take one down, pass it around, 49 bottles of beer on the wall! 49 bottles of beer on the wall, 49 bottles of beer! Take one down, pass it around, 48 bottles of beer on the wall! 48 bottles of beer on the wall, 48 bottles of beer! Take one down, pass it around, 47 bottles of beer on the wall! 47 bottles of beer on the wall, 47 bottles of beer! Take one down, pass it around, 46 bottles of beer on the wall! 46 bottles of beer on the wall, 46 bottles of beer! Take one down, pass it around, 45 bottles of beer on the wall! 45 bottles of beer on the wall, 45 bottles of beer! Take one down, pass it around, 44 bottles of beer on the wall! 44 bottles of beer on the wall, 44 bottles of beer! Take one down, pass it around, 43 bottles of beer on the wall! 43 bottles of beer on the wall, 43 bottles of beer! Take one down, pass it around, 42 bottles of beer on the wall! 42 bottles of beer on the wall, 42 bottles of beer! Take one down, pass it around, 41 bottles of beer on the wall! 41 bottles of beer on the wall, 41 bottles of beer! Take one down, pass it around, 40 bottles of beer on the wall! 40 bottles of beer on the wall, 40 bottles of beer! Take one down, pass it around, 39 bottles of beer on the wall! 39 bottles of beer on the wall, 39 bottles of beer! Take one down, pass it around, 38 bottles of beer on the wall! 38 bottles of beer on the wall, 38 bottles of beer! Take one down, pass it around, 37 bottles of beer on the wall! 37 bottles of beer on the wall, 37 bottles of beer! Take one down, pass it around, 36 bottles of beer on the wall! 36 bottles of beer on the wall, 36 bottles of beer! Take one down, pass it around, 35 bottles of beer on the wall! 35 bottles of beer on the wall, 35 bottles of beer! Take one down, pass it around, 34 bottles of beer on the wall! 34 bottles of beer on the wall, 34 bottles of beer! Take one down, pass it around, 33 bottles of beer on the wall! 33 bottles of beer on the wall, 33 bottles of beer! Take one down, pass it around, 32 bottles of beer on the wall! 32 bottles of beer on the wall, 32 bottles of beer! Take one down, pass it around, 31 bottles of beer on the wall! 31 bottles of beer on the wall, 31 bottles of beer! Take one down, pass it around, 30 bottles of beer on the wall! 30 bottles of beer on the wall, 30 bottles of beer! Take one down, pass it around, 29 bottles of beer on the wall! 29 bottles of beer on the wall, 29 bottles of beer! Take one down, pass it around, 28 bottles of beer on the wall! 28 bottles of beer on the wall, 28 bottles of beer! Take one down, pass it around, 27 bottles of beer on the wall! 27 bottles of beer on the wall, 27 bottles of beer! Take one down, pass it around, 26 bottles of beer on the wall! 26 bottles of beer on the wall, 26 bottles of beer! Take one down, pass it around, 25 bottles of beer on the wall! 25 bottles of beer on the wall, 25 bottles of beer! Take one down, pass it around, 24 bottles of beer on the wall! 24 bottles of beer on the wall, 24 bottles of beer! Take one down, pass it around, 23 bottles of beer on the wall! 23 bottles of beer on the wall, 23 bottles of beer! Take one down, pass it around, 22 bottles of beer on the wall! 22 bottles of beer on the wall, 22 bottles of beer! Take one down, pass it around, 21 bottles of beer on the wall! 21 bottles of beer on the wall, 21 bottles of beer! Take one down, pass it around, 20 bottles of beer on the wall! 20 bottles of beer on the wall, 20 bottles of beer! Take one down, pass it around, 19 bottles of beer on the wall! 19 bottles of beer on the wall, 19 bottles of beer! Take one down, pass it around, 18 bottles of beer on the wall! 18 bottles of beer on the wall, 18 bottles of beer! Take one down, pass it around, 17 bottles of beer on the wall! 17 bottles of beer on the wall, 17 bottles of beer! Take one down, pass it around, 16 bottles of beer on the wall! 16 bottles of beer on the wall, 16 bottles of beer! Take one down, pass it around, 15 bottles of beer on the wall! 15 bottles of beer on the wall, 15 bottles of beer! Take one down, pass it around, 14 bottles of beer on the wall! 14 bottles of beer on the wall, 14 bottles of beer! Take one down, pass it around, 13 bottles of beer on the wall! 13 bottles of beer on the wall, 13 bottles of beer! Take one down, pass it around, 12 bottles of beer on the wall! 12 bottles of beer on the wall, 12 bottles of beer! Take one down, pass it around, 11 bottles of beer on the wall! 11 bottles of beer on the wall, 11 bottles of beer! Take one down, pass it around, 10 bottles of beer on the wall! 10 bottles of beer on the wall, 10 bottles of beer! Take one down, pass it around, 9 bottles of beer on the wall! 9 bottles of beer on the wall, 9 bottles of beer! Take one down, pass it around, 8 bottles of beer on the wall! 8 bottles of beer on the wall, 8 bottles of beer! Take one down, pass it around, 7 bottles of beer on the wall! 7 bottles of beer on the wall, 7 bottles of beer! Take one down, pass it around, 6 bottles of beer on the wall! 6 bottles of beer on the wall, 6 bottles of beer! Take one down, pass it around, 5 bottles of beer on the wall! 5 bottles of beer on the wall, 5 bottles of beer! Take one down, pass it around, 4 bottles of beer on the wall! 4 bottles of beer on the wall, 4 bottles of beer! Take one down, pass it around, 3 bottles of beer on the wall! 3 bottles of beer on the wall, 3 bottles of beer! Take one down, pass it around, 2 bottles of beer on the wall! 2 bottles of beer on the wall, 2 bottles of beer! Take one down, pass it around, 1 bottles of beer on the wall! 1 bottle of beer on the wall, 1 bottle of beer! Take one down, pass it around, no more bottles of beer on the wall!

これだけ長いと、プログラムのありがたさが分かる！これを普通に入力すると大変そう。。