hello_world.rb

# Here we're demoing how puts and p work,
# as well as logging and commenting.

#1.+()
# puts "Hello World"
# p "Hello World!"
# p "Hello World!\n"
puts "This is the Ruby version (puts)"
puts RUBY_VERSION
puts "This is the Ruby version (p)"
p RUBY_VERSION # you know, the Ruby verssion
# puts 4
# p 4

def printstuff
  puts <<-EOP.upcase.gsub(/(\n|\A)[ ]{2}/, "\n")
    This
  is
      stuff
      inna
    heredoc.
  EOP
end

printstuff