How can I access the private data member without friend class?

[Yash001]

How can i access the Private data in another class?

class  Instruments {
 public:
   void isConnected();

private:
  std::share<InstrumentsPrivate> m_data:   // InstrumentsPrivate contain all private data. 
}

class  Channel
{
    void start(std::share<Instruments> deviceHandler ){

   // How can I access the deviceHandler->m_data->(member of InstrumentsPrivate).
  }
}

I do have one solution i can make the friend class of instruments. But this public API Header file . I can't add the friend class in public header file. is there any alternative solution?

Thank you,

[Pl45m4]

@Yash001

Public getter in instrument class, which will return the data

[Kent-Dorfman]

You cannot, without modifying the class where the private member is declared. That's why it was made private. Without a get/set method pair it is only visible internally to the class.