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Hmmm...

It doesn't work if a is very big and b is very small.

OK - I've done it and the numbers that you were having trouble with are now working.

How I did it was to take the integers into the function unsigned, and the add (unsigned int)(-2147483648) that...

Can you use larger variables in your calculations?

i.e.




int isitGreater(int a, int b)
{
long int x = (long int) a;

In that case, I think that there is nothing wrong with the code you have.

If it is not working, you are going to have to explain what is not working.

Hey,

I have to admit that I have a soft-spot for bitwise operations.

I have a few suggestions for you

((~x)+1))
This is the 2's complement that is a lot easier to write like this:
...