What is GNU?

ruby

GNUは何の略かに答えてみた．

プログラム

  • what_is_GNU.rb
def what_is_GNU(num = 0)
  gnu = "GNU is Not UNIX"
  1.upto(num) do
    gnu = "(#{gnu}) is Not UNIX"
  end
  puts "GNU = #{gnu}\n\n"
end

0.upto(10) do |index|
  puts "Do you know what is GNU? (y/n)"
  ans = gets.chomp
  if ans == 'y' 
    puts "Great!\n"
    break
  elsif ans == 'n' 
    what_is_GNU index
  else
    puts "Please type 'y' or 'n'!\n\n"
  end 
end

実行結果

% ruby what_is_GNU.rb
Do you know what is GNU? (y/n)
n
GNU = GNU is Not UNIX

Do you know what is GNU? (y/n)
n
GNU = (GNU is Not UNIX) is Not UNIX

Do you know what is GNU? (y/n)
y
Great!