oop - Return a string as private inherited class in c++ -

i have class privately inherits std::string. want have member function returns string base class. how do it?

class newclass() : private std::string {     ... public:     std::string getstring() const;     ... };  std::string newclass::getstring() const {   ??? } 

you better off keeping std::string private member of newclass. declare :

class newclass { private:      std::string str; ... public:     std::string getstring() const; }; ... std::string newclass::getstring() const {     return str; } 

however if need inherit std::string do

std::string newclass::getstring() const {     return *this; }; 

but warned cut out parts of derived class. better this:

const std::string& newclass::getstring() const {     return *this; }; 

which return reference std::string newclass has inherited from.