53. Double Pointer

#include <stdio.h>

void reassign_based_on_value(int **pp, int *n2_ptr) {
     // Your logic here
     int *tmp;
     if(**(pp)%2==0){
        //*tmp = *n2_ptr;
        *n2_ptr ^= **pp;
        **pp ^= *n2_ptr;
        *n2_ptr ^= **pp;
     }
     
     
}

int main() {
    int n1, n2;
    scanf("%d %d", &n1, &n2);

    int *p = &n1;

    reassign_based_on_value(&p, &n2);

    printf("%d", *p);

    return 0;
}