Question

If I have an odd number, how would I divide it in two and leave two integers, with the first being one more than the second. For instance 9 would produce 5 and 4?

Answer 1

The “smaller half” of int x is x/2. The “bigger half” is x/2 + x%2 or x - x/2.

Note that “smaller” and “bigger” refer to the absolute value, so in the case of negative x, bigger < smaller.

Of course, if x is always odd and positive, then x%2 will be 1 and the bigger half can also be computed as x/2 + 1.