Protected data class members c++

Question

Can the members of the protected class print out in the terminal? I’m quite confused how they work or how to access them

Answer 1

Class members with protected access specifiers are accessible by derived classes.
class Base {
private: int a {1};
protected: int b {2};
};
class Derived : public Base {
public:
void test() {
std::cout << a; // error
std::cout << b; // OK
}
};
int main() {
Derived obj;
obj.test();
}

Answer 2

Yes they are accessible in the class and immediate subclasses.