#include<string>
#include<iterator>
#include<vector>
#include<iostream>
int main(){
std::string str = "abc";
std::string str2 = str;
std::vector<int>::reverse_iterator rit = str.rbegin();
for(rit+1; rit != str.rend(); rit++){
str2.push_back('*rit');
}
std::cout << str2 << std::endl;
}
我预计输出是“abcba”,但 push_back() 中似乎有错误。谁来帮帮我T_T