题解 | 编写函数实现两数交换（指针方式）

#include <iostream>
using namespace std;

// write your code here......
void switch_num(int * m, int * n){
    int temp;
    temp = *m;
    *m = *n;
    *n = temp;
}

int main() {

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

    // write your code here......
    switch_num(&m, &n);

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

    return 0;
}