Swap Two Pointers Using Double Pointers

Code

#include <stdio.h>

void swap_pointers(int **p1, int **p2) {
    // Your logic here
    int *temp;
    temp = *p1; //keep address pointed to p1 into temp
    *p1 = *p2; //assign address of p2 to p1
    *p2 = temp; // assign the address of p1 stored to temp to p2 pointing to this

}

int main() {
    int a, b;
    scanf("%d %d", &a, &b);

    int *p1 = &a;
    int *p2 = &b;

    swap_pointers(&p1, &p2);

    printf("%d %d", *p1, *p2);

    return 0;
}

Solving Approach