random number guesser - first take

random.rb

number = rand(10)
puts 'Guess the number!'
input = 'input number'

while input != number
  input = gets.to_i # keep getting more numbers
  # give out hints to the user
  if input > number
    puts 'Too high'
  end
  if input < number 
    puts 'Too low'  
  end
end
puts "you got it! #{number}"

The if codeblocks is something I would do in C, but in a single line. Another was the input variable. In C, it's not easy to setup a memory type that can handle both integers and strings (there are tricks, but it's not pretty.) But in general, this is similar to the way I would solve the problem in C. This is nice because Ruby can handle a coding style which is similar to C.