反转字符串 特殊做法

#include <string>#include <iostream>int main(){std::string s = "I love you";int i = 0, j = s.size() - 1;while(i < j){s[i] = s[i] + s[j];s[j] = s[i] - s[j];s[i] = s[i] - s[j];i++;j--;}std::cout << s << std::endl;return 0;}