From: Gregory Brown <gregory.t.brown@...>
Date: 2009-07-28T02:33:43+09:00
Subject: Re: What is the power function

On Mon, Jul 27, 2009 at 1:01 PM, Prateek Agarwal<prateek.agwl@gmail.com> wrote:
> Chris Dempsey wrote:
>> I think you're looking for:
>>
>> 2 ** 3 => 8
>
> Thanks Chris.
> The following code is showing some error. Can you tell me what the
> problem is?
>
> def power(a,b)
> result=a**b
> result.to_i
> return result
> end
>
> puts "a="
> a=gets
> a.to_i
> puts "b="
> b=gets
> b.to_i
> c=power(a,b)
> puts "c=#{c}"

String#to_i is just a function that returns an integer, it does not
'cast' a string into an integer or anything like that.

This means you need to capture the return value to use it, or pass the
result directly to a function.

This would work:

c=power(a.to_i,b.to_i)

As would:

a = a.to_i
b = b.to_i
power(a,b)