Do-while loop in Ruby

# Original problem from "Seven Languages in Seven Weeks", Day 1
# Problem statement :: Write a program that picks a random number. Let a player guess the number, telling the player whether the guess is too low or too high

# this is a good illustration of the do-while looping construct in ruby
# please note that this is not a documented language feature and hence its ill adviced to use it.

begin
    puts "Guess a number within 1 to 10"
    guess = gets.chomp.to_i
    if guess>actual
        puts "You have guessed a HIGHER number ... try again"
    elsif guess<actual
        puts "You have guessed a LOWER number ... try again"
    end
end until actual==guess

puts "you have guessed the right number !!"