From: John Maclean <john@...>
Date: 2008-01-20T22:56:07+09:00
Subject: Methods and scope - (noob alert)

This block of code works and it's easy to see why:-


def add_two_num
  p "gimme two numbers. first :  "
  x = gets.chomp
  p "second : "
  y = gets.chomp
  out = x.to_i + y.to_i
  p out
end

add_two_num

This next lot --doesn't-- and I get the feeling that it has something to
do with scope, maybe within the case block. Am I right?


def
test_gets_positive p "gimme a number : "
  ask = gets.chomp
  n = ask.to_i

  case
    when n < 0
      puts "this number is -ve. i ain't gonna play no more! STOP!"
      exit
    when n = 0
    print " this number is +ve! this it\'s square:"
    p n*n
  end
end

test_gets_positive

wtf has happened to n?

Regards,

John Maclean
MSc (DIC)
+44 7739 171 531