题解 | #编写函数实现两数交换（引用方式）#

#include <iostream>
using namespace std;

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

void swap(int &a, int &b) {
    int temp = a;
    a = b;
    b = temp;
}

int main() {

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

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

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

    return 0;
}