Problem1_2.cpp

#include <cstdio>
#include <iostream>
#include <vector>

using namespace std;

void reverse(char *str){
    char* end = str;
    char tmp;
    if(str){
        while(*end){
            ++end;
        }
        --end;

        while(str < end){
            tmp = *str;
            *str++ = *end;
            *end-- = tmp;
        }
    }
}

int main(){
    string input;
    vector<char> str;
    while(cin >> input){
        cout << input << endl;
        str.assign(input.c_str(), input.c_str() + input.size());
        //str = vector<char>(input.begin(), input.end());
        reverse(&str[0]);
        cout << (char*)&str[0] << endl;
    }
}