CPP Operator Overloading & Type Conversions

Question 1

Which keyword is used to define an overloaded operator in C++?

Accepted Answer

operator

Answer

function

Answer

override

Answer

overload

Question 2

Which of the following operators CANNOT be overloaded in C++?

Accepted Answer

operator::

Answer

operator+

Answer

operator[]

Answer

operator->

Question 3

What is the conventional return type for the copy assignment operator (operator=)?

Accepted Answer

T&

Answer

void

Answer

bool

Answer

const T&

Question 4

How is the postfix increment operator (++) differentiated from the prefix version when overloading?

Accepted Answer

Postfix takes a dummy int parameter

Answer

Postfix returns a reference to *this

Answer

Prefix takes a dummy int parameter

Answer

Postfix must be declared static

Question 5

Which of the following operators MUST be overloaded as a member function?

Accepted Answer

operator=

Answer

operator+

Answer

operator<<

Answer

operator==

Question 6

What does the `explicit` keyword do when applied to a single-argument constructor?

Accepted Answer

Prevents implicit conversions using that constructor

Answer

Makes the constructor virtual

Answer

Forces the constructor to be inlined

Answer

Makes the constructor private

Question 7

When overloading the output stream operator (operator<<), what should be the first parameter type?

Accepted Answer

std::ostream&

Answer

const MyClass&

Answer

std::ostream

Answer

MyClass&