在C++中交换指针的地址

#include<iostream>
using namespace std;

void swap(int **x, int **y) {
    int *temp = *x;
    *x = *y;
    *y = temp;
}

int main() {
    int a = 10, b = 20;
    int *p1 = &a, *p2 = &b;

    cout << "Before swapping: p1 = " << p1 << ", p2 = " << p2 << endl;
    swap(&p1, &p2);
    cout << "After swapping: p1 = " << p1 << ", p2 = " << p2 << endl;

    return 0;
}

Before swapping: p1 = 0x7ffee0588d6c, p2 = 0x7ffee0588d68
After swapping: p1 = 0x7ffee0588d68, p2 = 0x7ffee0588d6c