C++字符串逆排序

#include <cstdlib>
#include <string>
#include <iostream>
#include <thread>
#include <array>

using namespace std;
	
int main(int argc, char *argv[])
{
	string str;
	cin>>str;
	string rstr;
	rstr.replace(rstr.begin(), rstr.end(),str.rbegin(),str.rend());
	cout<<rstr;
	while(1);
    return EXIT_SUCCESS;
}