Subj : Re: Math error ??? doen't make sense!
To   : borland.public.cpp.borlandcpp
From : Sebastian Ledesma
Date : Fri Jul 02 2004 12:36 am

Stan:

If you are using 16 bit apps (you can make DOS app's  with BC5.02) the int's
size are 16 bits.
So the largest number you can handle is +-2^15 -1 for signed values ( or
2^16-1 for unsigned),
you can switch your variables to long  in order to get the real result, also
you can make
a Win32 console app, in such case the int's are 32 bit wide.

Saludos
Sebastian

"Stan DeGroff" <sdegroff@bright.net> escribió en el mensaje
news:40e4c012@newsgroups.borland.com...
> I Programmed in Assembly, Fortran, DbaseIV, MS Prof Basic pre-Win for many
> years.
> This new stuff is mind blowing. So.. I ask for your patient help.
>
> I am using the Sam's Learning C in 24hr book that came with my new
> Bc++ 5.02 compiler.   (I need to learn it from ground up.)
> Reason for using old software is simple. I need to target 16bit embedded
> computer.
>
> Ch 9 Exercise 3
> -------------------
>
> #include<stdio.h>
> #include<math.h>
> main()
> {
> int x,y;
> long int z;
>
> x=7000;
> y=12000;
> z=x*y;
>
> printf("x * y == %lu\n",z);
>
> return 0;
> }
> --------------------------
>
> the above code should print 84000000.
> It doen't. I got 4294950144
>

.