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

simple recursion:

#include 

// 0-based index pos
int getDigit (const long number, int pos) 
{
    return (pos == 0) ? number % 10 : getDigit (number/10, --pos);
}

int main (void) {
    std::cout << getDigit (1234567, 4) << "\n";    
}