From: gotoken@... (GOTO Kentaro)
Date: 2000-06-22T07:40:42+09:00
Subject: [ruby-talk:03599] Re: Another small quiz

Hi,

In message "[ruby-talk:03597] Re: Another small quiz"
    on 00/06/21, "Dat Nguyen" <thucdat@hotmail.com> writes:
>I prefer:
>def fact(n)
>	if n < 0
>		raise "argument negative"
>	end
>	fact = 1
>	for i in 2..n
>		fact *= i
>	end
>	fact
>end

The avobe fails fact(0) and fact(1) ;-)

def fact(n)
        if n > 1
                fact = 1
                for i in 2..n
                        fact *= i
                end
                fact
        elsif n >= 0
                1
        else
                raise ArgumentError, "argument negative (#{n})"
        end
end

-- Gotoken