Subj : Re: Reversing a number
To   : comp.programming
From : Rob Thorpe
Date : Sun Sep 11 2005 05:09 pm

Willem wrote:
> Roger wrote:
> ) "Irrwahn Grausewitz" <irrwahn35@freenet.de> wrote in message
> ) news:shv7i1p3on0qpsr2rumeifst69o8tjtp32@4ax.com...
> )> But why treat the first iteration as a special case?
> )> Just replace the two lines above with:
> )>
> )>     int n = 0;
> )>
> )>>    while (i)
> )>>    {
> )>>        n *= 10;
> )>>        n += i % 10;
> )>>        i /= 10;
> )>>    }
> )>>    return n;
> )>>}
> )
> ) Then reverse(10000) is (1).
>
> Of course it is; the function returns an integer, after all.

I think the OP means a number in the mathematical sense of the word.
ie:-

1 -> 1
21 -> 12
5634 -> 4365

As Jerry Quinn pointed out it's simplest to convert it to a string then
reverse it and convert it back again.

.