题解 | #编写函数实现字符串翻转（引用方式）#

#include<bits/stdc++.h>
using namespace std;
// write your code here......
void reverse_string(string& s) {
    int len = s.length();
    for (int i = 0; i < len / 2; i++) { //对称交换
        char temp = s[len - 1 - i];
        s[len - 1 - i] = s[i];
        s[i] = temp;
    }
}

int main() {
    string s;
    getline(cin, s);
    // write your code here......
    reverse_string(s);
    cout << s;
    return 0;
}