Question

How to inherit base class as protected in C++

Answer 1

#include <iostream>

using std::cout;
using std::endl;

class Base {
protected:
	int i, j;                    
public:
	void set_ij(int _i, int _j) {
		i = _i;
		j = _j;
	}
	void print_ij() {
		cout << i << " " << j << endl;
	}
};


class Derived : protected Base {               
	int k;
public:
	void set(int _i, int _j) {
		set_ij(_i, _j);
		k = i + j;
	}
	void print() {
		cout << k << " " << endl;
		print_ij();

	}
};

int main()
{
	Derived o;

	o.set(2, 7);  
	o.print();

	return 0;
}


/*
run:

9
2 7

*/

 

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