Recursion - digits in reverse order

Question

I need to implement a recursive method printDigits that takes an integer num as a parameter and prints its digits in reverse order, one digit per line.

This is what

Answer 1

This should work

 int rev = 0;
 int reverse(int num)
{
    if (num < 10) {
        rev = rev*10 + num;
    }
    else {
        rev = rev*10 + (num % 10);
       num = reverse(num / 10);

    }
    return rev;
}