On 01.03.2010 20:21, Reiichi Tyrael wrote:
> I must create a little game; the one who play it must choose 2 numbers,
> the beginning and the end of a range, and the program generate a secret
> random number within that range, so the player must guess it!
> But the problem is...how do I generate a random number?
> I though at something like this:
> 
> number_to_guess = rand(n1..n2)
> 
> but it give me the error message "in `rand': can't convert Range into
> Integer (TypeError)"
> 
> What can I do? Thanks!

rand only accepts an integer which will make it produce values in the 
range 0...n (exclusive).  So you can do:

irb(main):001:0> low, high = 12, 56
=> [12, 56]
irb(main):002:0> r = low + rand(high - low)
=> 54

Kind regards

	robert

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