题解 | #编写函数实现两数交换（指针方式）#（数学方法）

#include <iostream>
using namespace std;

// write your code here......


int main() {

    int m, n;
    cin >> m;
    cin >> n;

    // write your code here......
    
    int* pm = &m;
    int* pn = &n;

    *pm = *pm - *pn;
    *pn = *pn + *pm;
    *pm = *pn - *pm;

    cout << m << " " << n << endl;

    return 0;
}