Protected Access

#include <iostream>
using namespace std;

class BaseDevice {
protected:
      int id = 0;
      // your code here: declare protected int id
};

class DerivedDevice : public BaseDevice {
public:

      // your code here: implement setId() and printId()
      void setId(int v) { this->id = v;}

      void printId() { cout << "Device ID: " 
       << this -> id << "\n";}

};

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