Divide int into 2 other int

I need to divide one int into 2 other int's. the first int is not constant so one problem would be, what to do with odd numbers because I only want whole numbers. For example, if int = 5, then int(2) will = 开发者_如何学Go2 and int(3) will = 3. Any help will greatly be appreciated.

---

Supposing you want to express x = a + b, where a and b are as close to x/2 as possible:

a = ceiling(x / 2.0);
b = floor(x / 2.0);

That's pseudo code, you have to find out the actual functions for floor and ceiling from your library. Make sure the division is performed as floating point numbers.

As pure integers:

a = x / 2 + (x % 2 == 0 ? 0 : 1);
b = x / 2

(This may be a bit fishy for negative numbers, because it'll depend on the behaviour of division and modulo for negative numbers.)

---

You can try ceil and floor functions from math to produce results like 2 and 3 for odd inputs;

  int(2)=ceil(int/2); //will produce 3 for input 5
  int(3)=floor(int/2); //will produce 2 for input 5

---

Well my answer is not in Objective-C but i guess you could translate this easily. My idea is:

part1 = source_number div 2
part2 = source_number div 2 + (source_number mod 2)

This way the second number will be bigger if the starting number is an odd number.