Mine

int sod (int n)
{
        int sum=0, number=0;

        do  {
                sum += ( n % 10);
                ++number;
                if ( n < 9)
                        break;
        } while ( (n = (n / 10)) > 0);
        printf(" %d, %d \n", sum, number);

        return sod(n);
}