Inheritance - General Questions

Can a derived class access private members of its base class directly?

What will be the output of the program?

#include <iostream>
using namespace std;
class A { public: int n = 10; };
class B : virtual public A {};
class C : virtual public A {};
class D : public B, public C {};
int main() {
    D d;
    d.n = 5;
    cout << d.B::n + d.C::n << endl;
    return 0;
}

Which members of a base class are NOT inherited in the usual sense?

What is the default inheritance mode for a class in C++?

What will be the output of the program?

#include <iostream>
using namespace std;
class A { public: int x = 1; };
class B : public A { public: int y = 2; };
int main() {
    B b;
    cout << b.x + b.y << endl;
    return 0;
}