Double Pointer

Code

#include <stdio.h>

void reassign_based_on_value(int **pp, int *n2_ptr) {
    // Your logic here
    int* n1_addr = *pp;
    if((*(n1_addr))%2 == 0){
        n1_addr = n2_ptr;
        *pp = n1_addr;
    }
    return;
}

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

    int *p = &n1;

    reassign_based_on_value(&p, &n2);

    printf("%d", *p);

    return 0;
}

Solving Approach