chash register program for Launch Academy

cash_register2.rb

require 'bigdecimal'
require 'bigdecimal/util'

values = []

puts 'What is the sale price?'
print '>'
input = gets.chomp

while input != 'done'
  values << input.to_f
  puts 'What is the sale price?'
  print '>'
  input = gets.chomp
end

puts "Here are your item prices:\n\n"
values.each do |value|
  puts "$#{sprintf("%.2f", value)}"
end

puts "\nWhat is the amount tendered?"
print '>'
cash = gets.chomp.to_f
total = values.inject(0) { |result, element| result + element }

if total > cash
  puts "WARNING: Customer still owes $#{sprintf("%.2f", (total - cash))}! Exiting..."
  exit
end

puts '===Thank You!==='
puts sprintf("%.2f", cash)
puts "The total change due is #{sprintf("%.2f", (cash - total))}"
puts
puts "#{Time.new.strftime('%m/%d/%Y %l:%M%p')}"