Protected Access

#include <iostream>
using namespace std;

class BaseDevice {
protected:
      int var;
    // your code here: declare protected int id

};

class DerivedDevice : public BaseDevice {
public:
      void setId(int v) { var = v; }
      void printId() { cout << "Device ID: " << var << endl; }
};

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