C++ | friend keyword | Question 1

Predict the output of following program.

CPP

#include <iostream>
using namespace std;
class A
{
protected:
    int x;
public:
    A() {x = 0;}
    friend void show();
};

class B: public A
{
public:
    B() : y (0) {}
private:
    int y;
};

void show()
{
    A a;
    B b;
    cout << \"The default value of A::x = \" << a.x << \" \";
    cout << \"The default value of B::y = \" << b.y;
}

(A)

Compiler Error in show() because x is protected in class A

(B)

Compiler Error in show() because y is private in class b

(C)

The default value of A::x = 0 The default value of B::y = 0

(D)

Compiler Dependent

Answer

Please comment below if you find anything wrong in the above post
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