Protected Access

#include <iostream>
using namespace std;

class BaseDevice 
{
protected:
      int id;
};

class DerivedDevice : public BaseDevice 
{
public:

     void setId(int id1)
     {
      id=id1;
          
      }
      void  printId()
      {
           cout<<"Device ID: "<<id<<endl;
      }


};

int main() 
{
   DerivedDevice d;
   d.setId(101);
   d.printId();
   return 0;
}