curious qiestion....

to all on here who dabble in php... how many of you have actully gone to
college, taken algorithm courses, microprocessor courses,
design/architecture courses, etc..

or is the majority of the work here from people who've grabbed the tools and
started programming... ?


-----Original Message-----
From: Robert Cummings [mailto:[EMAIL PROTECTED]
Sent: Monday, November 17, 2008 9:53 AM
To: Stut
Cc: Nathan Rixham; php-general@lists.php.net
Subject: Re: [PHP] while-question


On Mon, 2008-11-17 at 14:54 +0000, Stut wrote:
> On 17 Nov 2008, at 14:31, Nathan Rixham wrote:
> > if you really want a challenge try this one..
> >
> > task: add the numbers 5 and 17 together, using php, without using
> > the + operator. fill it in:
> >
> > function add($a , $b) {
> > //code here but no + - / * operators
> > return $answer;
> > }
> >
> > echo add(5, 17);
>
> Elemental my dear Mr Rixham...

What level is that elemental?

> function add($a , $b)
> {
>    $answer = $a ^ $b;
>    while (0 != ($a & $b))
>    {
>      $b = ($a & $b) << 1;
>      $answer = $answer ^ $b;
>    }
>    return $answer;
> }

He only said you couldn't use the + operator... nothing was said about
using the - operator.

    $total = -(-5 - 17);

Cheers,
Rob.
--
http://www.interjinn.com
Application and Templating Framework for PHP


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