48. Pointer- Swap Value

#include <stdio.h>

void swap(int *p1, int *p2) {
    // Your logic here
    if(p1 == NULL || p2 == NULL){
        return;
    }
    *p1 ^= *p2;
    *p2 ^= *p1;
    *p1 ^= *p2;
}

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

    swap(&a, &b);

    printf("a = %d ", a);
    printf("b = %d", b);

    return 0;
}