Inheriance for protected member

 

#include <iostream>
using namespace std;

class BaseClass {

protected:
  int i, j;

public:

  void set(int a, int b) { 
     i = a; 

     j = b; 
  }

  void show() { 

     cout << i << " " << j << endl; 

  }
};

// i and j inherited as protected.
class DerivedClass1 : public BaseClass {

  int k;

public:

  void setk() { 

     k = i * j; 

  }

  void showk() { 
   
     cout << k << endl; 
 
  }
};

// i and j inherited indirectly through DerivedClass1.
class DerivedClass2 : public DerivedClass1 {
 
  int m;

public:

  void setm() { 

     m = i - j; 

  }

  void showm() { 

     cout << m << endl; 

  }
};

int main()
{
  DerivedClass1 object1;

  DerivedClass2 object2;

  object1.set(2, 3);

  object1.show();

  object1.setk();

  object1.showk();

  object2.set(3, 4);

  object2.show();

  object2.setk();

  object2.setm();

  object2.showk();

  object2.showm();

  return 0;
}

Related examples in the same category

1.	Inherit base as protected
2.	Demonstrate protected members.
3.	protected inheritance

Inheriance for protected member : Protected « Class « C++

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