C++ Programming - MCQ Practice Questions

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

What will be the output of the following code? class A { public: virtual void func() { cout << "A"; } }; class B : public A { public: void func() { cout << "B"; } }; A *ptr = new B(); ptr->func(); delete ptr;

In C++, what is a friend function?

In C++11 and later, what does the 'override' keyword ensure when used with virtual functions?

Which of the following statements about constructors in C++ is FALSE?

In C++, what is the default access specifier for class members?

What is the output of the following code? class Base { public: void show() { cout << "Base"; } }; class Derived : public Base { public: void show() { cout << "Derived"; } }; int main() { Base *b = new Derived(); b->show(); }

Which statement about 'this' pointer is correct?

What is the purpose of using static members in a class?

Which of the following is an example of compile-time polymorphism?

What is the main difference between composition and inheritance?

Which of the following correctly uses pure virtual functions?

What will be the output of the following code? class Base { public: virtual void display() { cout << "Base"; } }; class Derived : public Base { public: void display() { cout << "Derived"; } }; int main() { Base *ptr = new Derived(); ptr->display(); }

Which of the following statements about abstract classes in C++ is true?

What is the purpose of the 'const' keyword when used with member functions?

In the context of operator overloading, which operator cannot be overloaded in C++?

What is the output of the following code? class A { public: int x = 5; }; class B : public A { public: int x = 10; }; int main() { B obj; cout << obj.x; }

Which of the following correctly describes function binding in C++?

What will be printed by the following code? class Test { int x; public: Test() { x = 0; } ~Test() { cout << "Destructor"; } }; int main() { Test t1, t2; return 0; }

What is the primary advantage of using virtual functions in a base class?