Polymorphism in Object-Oriented Programming Quiz

What is polymorphism in Object-Oriented Programming?

• The ability to overload operators

• The ability to create templates

• The ability to create multiple classes

• The ability to treat objects of different classes as objects of a common base class

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

• Operator overloading

• Function overloading

• Using a base class pointer to call a derived class method

• Using templates

What keyword is used to declare a virtual function in C++?

• dynamic

• function

• virtual

• override

What does the 'override' keyword indicate in a derived class?

• It prevents the function from being overridden

• It specifies that the function is overriding a base class function

• It indicates that the function is virtual

• It creates a new function

What is the main purpose of function templates?

• To create multiple functions with the same name

• To allow functions to operate with generic types

• To overload operators

• To define virtual functions

In the context of polymorphism, what is function overloading?

• Overriding a base class function in a derived class

• Creating a function that can take any type of argument

• Using different function names for the same operation

• Using the same function name with different parameters

What is the output of the following code: 'Animal* a; Dog d; a = &d; a->sound();' if sound() is not virtual?

• No output

• Dog barks

• Animal makes a sound

• Compilation error

Which of the following statements about virtual functions is true?

• They can be static members

• They must be defined in the derived class

• They enable run-time polymorphism

• They cannot have a destructor

What is the primary benefit of using polymorphism in programming?

• Reduced memory usage

• Faster execution time

• Code reusability and flexibility

• Increased complexity

What does the '->' operator do in C++?

• Overloads an operator

• Defines a function

• Creates a new object

• Accesses members of a class through a pointer