C++ operator overloading

Can C++ operators be overloaded for built-in data types?

• Yes

• No

Answer explanation

False. Operators can only be overloaded for user-defined classes and structures.

Is it possible to overload the conditional operator ? in C++?

• Yes

• No

Answer explanation

False. The conditional operator ? cannot be overloaded in C++.

Does C++ allow operator overloading for all operators?

• Yes

• No

Answer explanation

Some operators, such as the conditional operator ?, the scope resolution operator ::, and the member pointer operators .* and ->*, cannot be overloaded in C++.

Are the unary operator and binary operator overloads defined as separate functions?

• Yes

• No

Answer explanation

Unary operator overloads are defined as member functions with no arguments, while binary operator overloads are defined as member functions with one argument.

Can operator overloading change the precedence of operators?

• Yes

• No

Answer explanation

The precedence of operators cannot be changed by operator overloading. The overloaded operator retains its original precedence in the expression.

What is the correct syntax for overloading the unary minus operator in C++?

• operator-(int)

• operator-()

• operator-(const MyClass&)

• operator-(MyClass&)

Which operator can be overloaded as a non-member function in C++?

• Unary plus operator +

• Binary minus operator -

• Subscript operator []

• Ternary conditional operator ?

What is the difference between a unary operator and a binary operator in C++?

• Unary operators perform operations on a single object, while binary operators perform operations on two objects.

• Binary operators perform operations on a single object, while unary operators perform operations on two objects.

• There is no difference between unary operators and binary operators in C++.

• Unary operators can only be overloaded for built-in data types, while binary operators can be used for user-defined classes.

Answer explanation

Unary operators perform operations on a single object, while binary operators perform operations on two objects.

What is the correct syntax for overloading the stream insertion operator (<<) in C++?

• operator<<(ostream&, const MyClass&)

• operator<<(MyClass&, ostream&)

• operator<<(const ostream&, MyClass&)

• operator<<(MyClass&, const ostream&)

Can operator overloading be used to create new operators in C++?

• Yes, operator overloading can be used to create new operators in C++.

• No, operator overloading cannot be used to create new operators in C++.

• The creation of new operators is only possible in C++ through the use of macros.

• The creation of new operators is only possible in C++ by modifying the compiler source code.