Pointer- Swap Value

#include <stdio.h>

void swap (int *p1, int *p2) {
    int temp = *p1;
    *p1 = *p2;
    *p2 = temp;

}

int main(){
    int a, b;
    scanf("%d %d", &a, &b);
 
    swap(&a, &b);
    
    printf("a = %d ", a);
    printf("b = %d", b);
    return 0;

}