Overloading in C++ MCQ Exercise 3

1. What is the best way to declare a friend function to overload the binary + operator in C ++?

1. A operator+(A, A);
2. A operator+(const A&, const A&);
3. A operator+(A&);
4. A operator+(const A&);

2. Which keyword is used to overload an operator as a non-member function but still access private members?

1. static
2. friend
3. virtual
4. inline

3. Can the new and delete operators be overloaded in C++?

1. Yes
2. No
3. Both
4. None of the above

4. Which of the following syntax overloads the unary minus (-) operator for a class?

1. A operator-(int);
2. A operator-();
3. A operator-() const;
4. A operator-() &;

5. What is the return type of the overloaded subscript operator [] in a class for read-only access?

1. int
2. int&
3. const int&
4. int*

6. Which of the following statements about function call operator() overloading is correct?

1. It cannot be overloaded.
2. It must be a friend function.
3. It allows objects to be used as functions.
4. It can only be overloaded in derived classes.