From: Shuaib Zahda <shuaib.zahda@...>
Date: 2007-10-22T14:12:11+09:00
Subject: Re: Class variables

Sorry guys
after a more search effort i figured it out.
i forgot to call to_i method

so
def sum
 @@num1.to_i + @@num2.to_i
end

and it works
the reason is that @@num1 ans @@num2 are string.

Sorry again
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