Protected Access

#include <iostream>
using namespace std;

class BaseDevice {
protected:

      // your code here: declare protected int id
      int id;

};

class DerivedDevice : public BaseDevice {
public:

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

};

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