class Same {

public:

    void reverse(const char* str)

    {

        char* A = const_cast<char*>(str);

        A[] = '';

        printf("%u\n",A);

        printf("%u\n",str);

        return;

    }

};

int main()

{

    Same re;

    string str = "This is nowcoder";

    printf("%u\n", &str);

    re.reverse(str.data());

    cout<< str << "  " << endl;

    return ;

}