babylonian.rb

puts "What number do you want to get the square root of? "
x = gets.chomp.to_f
puts "What's your first guess? "
r = gets.chomp.to_f

puts "Calculating square root of #{x} with guess #{r}."

10.times do |i|
    r = (r + x/r) / 2
    puts "Closer answer: #{r}. Calculating more places..."
end