#---
# Excerpted from "Programming Ruby 3.2",
# published by The Pragmatic Bookshelf.
# Copyrights apply to this code. It may not be used to create training material,
# courses, books, articles, and the like. Contact us if you are in doubt.
# We make no guarantees that this code is fit for any purpose.
# Visit https://pragprog.com/titles/ruby6 for more book information.
#---
def header(name, level:, upper: false)
  name = name.upcase if upper
  "<h#{level}>#{name}</h#{level}>"
end

header("Introduction", level: 1)
header("Getting started", level:2)
header("Conclusion", upper: true, level: 1)
