#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
int same_num_odd_digits(unsigned long n1, unsigned long n2);
int main ()
{
unsigned long a,b;
printf("Please enter 2 unsigned long nums : \n");
scanf("%lu%lu",&a,&b);


int c = same_num_odd_digits(a,b);
if (c == 0)
{
    printf("%lu and %lu have the same num of odd digits\n",a,b);
    return 0;
}
printf("%lu and %lu do NOT have the same num of odd digits\n",a,b);
return 0;
}
int same_num_odd_digits(unsigned long n1, unsigned long n2)
{
    if ((n1 == 0) && (n2 == 0))
        return 0;
    if (n1 != 0)
    {
        if (n1 % 10 % 2 != 0)
        {
            return 1 + same_num_odd_digits(n1/10,n2);
        }
        else
            same_num_odd_digits(n1/10,n2);
    }
    if (n2 != 0)
    {
        if (n2 % 10 % 2 != 0)
        {
            return -1 + same_num_odd_digits(n1,n2/10);
        }
        else
         same_num_odd_digits(n1,n2/10);
    }
        return 0;
}