Question

I would like to split a two digit int into 2 one digit ints! For example:

20 = 2 and 0

15 = 1 and 5

8  = 0 and 8

Answer 1

That’s easy: use % to get the mod of the number, and / for the integer division (i.e. division where the fractional part is discarded).

Your numbers are in the decimal system (i.e. the base is 10) so you divide and mod by 10, like this:

int a = 20 / 10; // 2
int b = 20 % 10; // 0

To print a number digit-by-digit, least significant digit first, you can use this loop:

int a = 12345;
while (a != 0) {
    lastDigit = a % 10;
    Console.WriteLine(lastDigit);
    a /= 10;
}