From: Jon Lim <snowblink@...>
Date: 2011-10-22T16:29:08+09:00
Subject: Re: power of 2 code

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His example is wrong, as the result should be 2^16

ruby-1.9.2-p180 :008 > 2**17
 => 131072
ruby-1.9.2-p180 :009 > 2**16
 => 65536

If you are learning, recommend:
https://pine.fm/LearnToProgram/


On Sat, Oct 22, 2011 at 05:37, Ray DarkScythe
<scytherdarkscyther@yahoo.com>wrote:

> hello I am new here and new to ruby (no programming experience but
> willing to learn)
>
> I am following "Daniel Carrera" tutorial I am already at while loops and
> fairly I understand of it but the one thats bugging me is the exercise
> of the power of 2.
>
> heres the exercise:
>
> Rewrite this last program so that the computer asks for the maximum
> number and the program computes the corresponding power of two.
>
> Enter maximum value:
> 124123
> 2^17 =131072 is the highest power of 2 less than 124123
>
>
> heres my code;
>
> puts "Enter a maximum value: "
> number =gets.chomp.to_i
> high =number
> while number < 10_000
>    number *= 2
> end
>  puts high.to_s + " is the highest " + \
>      "power of 2 less than " + number.to_s
>
>
> this is the site:
> http://localdoc.scusa.lsu.edu/ruby/Tutorial/part_02/while.html
>
> thanks for anyone answering
>
> --
> Posted via http://www.ruby-forum.com/.
>
>

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