How to get the digits of a number without converting it to a string/ char array?

Question

How do I get what the digits of a number are in C++ without converting it to strings or character arrays?

Answer 1

Those solutions are all recursive or iterative. Might a more direct approach be a little more efficient?

Left-to-right:

int getDigit(int from, int index)
{
   return (from / (int)pow(10, floor(log10(from)) - index)) % 10;
}

Right-to-left:

int getDigit(int from, int index)
{
   return (from / pow(10, index)) % 10;
}