Simple christmas tree with Ruby.

christtree.rb

# n here is the 'row', or the whitespace.
# height is the height of the tree.

def tree(height)
  height.times do |n|
    print ' ' * (height - n)
    puts "\033[32m*\033[0m" * (2 * n + 1)
  end
  4.times do 
    puts '#####'.center(41)
  end
  puts ''
  puts "Merry Christmas!".center(43)
end

tree(20)