From: Harold Hausman <hhausman@...>
Date: 2007-03-26T10:38:15+09:00
Subject: Re: how to tranlsate number to binary?

On 3/26/07, Ak 756 <macro.peng@gmail.com> wrote:
> Hi, I am a ruby newbie. I want to write a program which will scan a
> input file, change every digital number into  4 bits len's binary
> number.
> For example, for input.txt as
>
> 903
> 1047
>
> I will get a new file as
>
> 100100000011
> 0001000001000111
>
> Would anyboby kindly help to tell me how to do this?

I don't know what a "4 bits len's binary number" is.

But here's how you convert decimal to binary in Ruby:

irb(main):004:0> 903.to_s(2)
=> "1110000111"
irb(main):005:0> 1+2+4+128+256+512
=> 903

Hope that helps,
-Harold