Which is the correct statement about pure virtual functions?

Pure virtual function cannot implemented in derived classes

They should be defined inside a base class

Pure keyword should be used to declare a pure virtual function

Pure virtual function is implemented in derived classes

Pure virtual function cannot implemented in derived classes

Which is the correct syntax of defining a pure virtual function?

pure virtual return_type func();

virtual return_type func() pure;

virtual return_type func() = 0;

What is a pure virtual function in C++?

A virtual function defined in a base class

A virtual function declared in a base class

A function without definition in a base class

What is an abstract class in C++?

Class from which any class is derived

Class specifically used as a base class with atleast one virtual functions

Class specifically used as a base class with atleast one pure virtual functions

Class from which any class is derived

Any Class in C++ is an abstract class

Explore topic-wise MCQs in C++ Programming.

This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your C++ Programming knowledge and support exam preparation. Choose a topic below to get started.

1.	Which is the correct statement about pure virtual functions?
A.	They should be defined inside a base class
B.	Pure keyword should be used to declare a pure virtual function
C.	Pure virtual function is implemented in derived classes
D.	Pure virtual function cannot implemented in derived classes
Answer» D. Pure virtual function cannot implemented in derived classes

Discussion

2.	Which is the correct syntax of defining a pure virtual function?
A.	pure virtual return_type func();
B.	virtual return_type func() pure;
C.	virtual return_type func() = 0;
D.	virtual return_type func();
Answer» D. virtual return_type func();

Discussion

3.	What is a pure virtual function in C++?
A.	A virtual function defined in a base class
B.	A virtual function declared in a base class
C.	Any function in a class
D.	A function without definition in a base class
Answer» C. Any function in a class

Discussion

4.	What is an abstract class in C++?
A.	Class specifically used as a base class with atleast one virtual functions
B.	Class specifically used as a base class with atleast one pure virtual functions
C.	Class from which any class is derived
D.	Any Class in C++ is an abstract class
Answer» C. Class from which any class is derived

Discussion