Object Oriented Concepts Through CPP

When can an inline function be expanded?

• Runtime

• Compile time

• Never gets expanded

• All of the above

Choose the option below which is not a member of class.

• Friend function

• Static function

• Virtual function

• Const function

Data members and member functions of a class are private by default. True or False?

• True

• False

What does polymorphism stand for?

• a class that has four forms

• a class that has two forms

• a class that has only a single form

• a class that has many forms

Which principle of OOP is illustrated by defining different methods with the same name but different parameters?

• Inheritance

• Polymorphism

• Encapsulation

• Abstraction

What is the purpose of default arguments in function definitions?

• To specify what value a function returns

• To give a default value to a parameter if no argument is passed

• To make a parameter optional

• To overload a function

What does encapsulation in C++ refer to?

• Creating multiple copies of the same function

• Protecting data by making it private

• The process of combining data and functions into a single unit

• Linking different classes together

What does the delete operator do in C++?

• Deletes a variable from the program

• Removes a file from the disk

• Erases a class definition

• Frees memory allocated by new

Which of the following is a feature of encapsulation?

• Creating multiple instances of a class

• Inheriting properties from another class

• Hiding the internal state of an object

• Defining abstract classes

What is the result of trying to access a private member of a class from outside its definition?

• It will return a default value

• It will compile successfully

• It will cause a runtime error

• It will cause a compile-time error