Pointer- Swap Value

Code

#include <stdio.h>

void swap(int *p1, int *p2) {
    // put p1's value into tmp var
    int tmp = *p1;
    // put p2's value in p1's address
    *p1 = *p2;
    // put tmp's value in p2's address
    *p2 = tmp;

}

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

    swap(&a, &b);

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

    return 0;
}

Solving Approach