C++ Friend Functions and Classes Quiz

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

• friend

• private

• friend_function

• access

Where should the declaration of a friend function be placed?

• In a separate file

• Outside the class

• Inside the class body

• In the main function

Can a friend function access private data of a class?

• No

• Yes

• Only if declared public

• Only if it's a member function

Which of the following is true about a friend function?

• It cannot access private members

• It is a member of the class

• It can be called like a normal function

• It must be defined inside the class

What can a friend class access?

• Only public members

• Only static members

• Only private members

• Both private and protected members

Which of the following is NOT a characteristic of a friend function?

• It can be declared in public or private

• It can access private members

• It cannot be called using an object

• It is in the scope of the class

What is the syntax for declaring a global function as a friend function?

• friend return_type function_name(arguments);

• global friend function_name(arguments);

• friend function_name(arguments);

• function_name(arguments) as friend;

What is the purpose of the friend keyword in C++?

• To allow access to private members

• To declare a function as a member

• To define a global variable

• To create a new class

Can a friend function be a member function of another class?

• Only if declared private

• Only if declared public

• No

• Yes

What type of function can be declared as a friend function?

• Only global functions

• Only member functions

• Both global and member functions

• Only static functions