123456789*123456789

I have been set the task of multiplying 123456789 by 123456789 using borland 3.1.

Its obvious to anyone what the problems going to be!!!

But...... How do I get round it?

In other words, how do I do this calculation using C or C++ in a DOS compiler.

It can be done, but how or where do I start?

To make matters worse, I have to prove my calculation by dividing the answer by 123456789 and ending up with 123456789 to prove my program actually works!!!!

Doh

double unsigned float x;

=P

floats / doubles cannot be unsigned.

You'll likely have to break it digit by digit and store them in a linked list / array, write your own multiplicaiton / carry function (recursion would work incely) and do it that way.

Quzah.