C++ OOPs Concepts & Inheritance Quiz

Which of the following is not a feature of OOP in C++?

• Encapsulation

• Abstraction

• Inheritance

• Compilation

What is the default access specifier for members of a class in C++?

• Public

• Private

• Protected

• Internal

What type of inheritance is shown in the following code? class A { }; class B : public A { }; class C : public B { };

• Single inheritance

• Multiple inheritance

• Multilevel inheritance

• Hybrid inheritance

What is the output of this code? class Base { public: void show() { cout << "Base class"; } }; class Derived : public Base { public: void show() { cout << "Derived class"; } }; int main() { Derived d; d.show(); return 0; }

• Base class

• Derived class

• Error

• Nothing

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

• inherit

• extends

• using

• :

Which of the following is not a C++ token?

• Identifier

• Keyword

• Punctuation

• Class

What is the output of this code snippet? class A { public: int x = 10; }; class B : public A { public: void display() { cout << x; } }; int main() { B obj; obj.display(); return 0; }

• Error

• 10

• 0

• Garbage value

Which of the following is used to resolve ambiguity in multiple inheritance?

• this pointer

• scope resolution operator (::)

• pointer to derived

• virtual function

Which inheritance type has a diamond problem in C++?

• Single

• Multilevel

• Multiple

• Hierarchical

Which of the following is a correct class declaration in C++?

• class MyClass()

• class MyClass { };

• MyClass class { };

• class: MyClass { };