3.1

program.rb

puts 'Hi there!'
p 'Hi now also returning this string not only printing'

def say_hi
  p 'I say hi to you!'
end

say_hi

def say_hi(nickname)
  p 'Hello' + ' ' + nickname + ' nice nickname!'
end

say_hi('humpalumpa')

new_nickname = "hodooor"

say_hi(new_nickname)


def greeting_and_get_name
  puts "Please enter your name"
  name = gets.chomp
  puts "Hello" + " " + name
end