Inheritance Interview Questions

    Question 1: C++ OOPS - Basic Inheritance Concept

    Which keyword is used in C++ to inherit a class?

    Question 2: C++ OOPS - Types of Inheritance

    Which of the following is NOT a type of inheritance in C++?

    Question 3: C++ OOPS - Access Specifier in Inheritance

    If a base class is inherited as private, what happens to its public members in the derived class?

    Question 4: C++ OOPS - Code Example Single Inheritance

    What will be the output of the following code?

    #include<iostream>
using namespace std;
class A {
public:
    void show() { cout << "Class A"; }
};
class B : public A {};
int main() {
    B obj;
    obj.show();
}

    Question 5: C++ OOPS - Multilevel Inheritance Code

    What will the following program print?

    #include<iostream>
using namespace std;
class A {
public: void display() { cout << "A "; }
};
class B : public A {
public: void displayB() { cout << "B "; }
};
class C : public B {
public: void displayC() { cout << "C"; }
};
int main() {
    C obj;
    obj.display();
    obj.displayB();
    obj.displayC();
}

    Question 6: C++ OOPS - Diamond Problem

    The "diamond problem" occurs in which type of inheritance?

    Question 7: C++ OOPS - Virtual Inheritance

    Which keyword is used to solve the diamond problem in C++?

    Question 8: C++ OOPS - Constructor Call Order

    In inheritance, what is the order of constructor calls?

    Question 9: C++ OOPS - Protected Members in Inheritance

    If a member is declared protected in the base class, how is it inherited in a public derived class?

    Question 10: C++ OOPS - Function Overriding Code

    What will the following code output?

    #include<iostream>
using namespace std;
class Base {
public:
    void show() { cout << "Base"; }
};
class Derived : public Base {
public:
    void show() { cout << "Derived"; }
};
int main() {
    Derived d;
    d.show();
}