Question 1

In C++, >> is used as a stream extraction operator and as a right shift operator.

Accepted Answer

In C++, >> can be used as a stream extraction operator to extract data from an input stream, and it can also be used as a right shift operator to shift bits to the right.

Question 2

Most operator functions can either be member functions or nonmember functions of a class.

Accepted Answer

This is true. Operator functions can be defined as member functions that take one operand implicitly as the calling object, or as nonmember functions that take two operands explicitly as arguments.

Question 3

The declaration of a friend function cannot be placed within the private part of the class.

Accepted Answer

The declaration of a friend function can be placed within the private part of the class.

Question 4

The function that overloads the ____ operator for a class must be declared as a member of the class.
A) ::
B) *
C) ->
D) +

Accepted Answer

The answer of The function that overloads the ____ operator...

Question 5

Operator functions typically return void.

Accepted Answer

Operator functions can return values of any data type, not necessarily void. It depends on the specific functionality of the operator.

Question 6

The associativity of the operator = is from right to left.

Accepted Answer

The operator = is right associative, meaning that if there are multiple assignments in a row, they are evaluated from right to left. For example, in the expression a = b = c = 5, c is assigned the value 5 first, then b is assigned the value of c (which is 5), then a is assigned the value of b (which is also 5).

Question 7

Operators can be overloaded either for objects of the user-defined types, or for a combination of objects of the user-defined type and objects of the built-in type.

Accepted Answer

This statement is true. Operators can be overloaded for user-defined types as well as for a combination of user-defined types with built-in types.

Question 8

Which of the following function prototypes overloads the != operator for the class rectangleType?
A) bool operator!=(rectangle&) const;
B) bool operator!=(const rectangleType&) const;
C) int operator!=(const rectangleType) const;
D) int operator!=(rectangle&) const;

Accepted Answer

The correct prototype for overloading the != operator for the rectangleType class is option B, which takes a const reference to a rectangleType object as an argument and returns a boolean value. The const keyword guarantees that the rectangle object passed as an argument won't be modified within the function. Option A is incorrect because it doesn't specify that the argument passed to the function is a rectangleType object. Option C is incorrect because it returns an integer value instead of a boolean value. Option D is incorrect because it doesn't specify the const keyword for the argument passed to the function.

Question 9

The name of the function to overload the operator <= is ____.
A) overload<=
B) <=new
C) operator<=
D) <=operator

Accepted Answer

The correct syntax to overload the <= operator is "operator<=". Therefore, option C is the correct choice.

Question 10

Every object of a class maintains a (hidden) pointer to itself, and the name of this pointer is ____.
A) self
B) object
C) it
D) this

Accepted Answer

The correct keyword in Python to refer to the current instance of a class is "self". However, the question is asking for the name of the hidden pointer that every object of a class maintains. In Python, this hidden pointer is referred to as "this" in many other programming languages, but in Python, it is referred to as "self". Therefore, none of the options provided are entirely correct. However, option D is the closest and is the commonly used keyword in other languages.

Question 11

The general syntax to overload the stream extraction operator >> for a class is ____.
A) istream& operator>>(istream&, className&);
B) const istream& operator>>(istream&, className&);
C) friend operator>>(istream&, className&);
D) friend istream& operator>>(istream&, className&);

Accepted Answer

The overloaded extraction operator needs to access the private members of the class, so it needs to be declared as a friend function. Also, we want to modify the input stream, so we need to return a reference to the istream object. Therefore, the correct syntax is "friend istream& operator>>(istream&, className&);"

Question 12

To include the operator function operator+ as a nonmember function of the class rectangleType, its prototype in the definition of rectangleType is: ____ rectangleType operator+(const rectangleType&, const rectangleType&);
A) bool
B) int
C) double
D) friend

Accepted Answer

To include the operator function operator+ as a nonmember function of the class rectangleType, we need to declare it as a friend function in the class definition. This allows the function to access the private members of the class. Therefore, the best choice is D) friend.

Question 13

In C++, operator is a reserved word.

Accepted Answer

Operator is a reserved word in C++.

Question 14

A friend function does not have access to the private data members of the class.

Accepted Answer

A friend function does have access to the private data members of the class.

Question 15

The return type of the function operator == is ____.
A) int
B) bool
C) char
D) void

Accepted Answer

The return type of the operator == is bool. It returns true if the two operands on either side are equal, and false otherwise.

Question 16

When an object invokes a member function, the member function references the pointer ____ of the object.
A) object
B) it
C) this
D) address

Accepted Answer

When an object invokes a member function, the keyword "this" is automatically created and refers to a pointer to the object itself. Therefore, the correct choice is C - "this".

Question 17

The general form of the functions to overload the binary operators as member functions of a class is returnType operator#(____ className&) const;.
A) class
B) const
C) *
D) &

Accepted Answer

The correct form for overloading binary operators as member functions includes using the `const` keyword to indicate that the function does not modify the object on which it is called. This is important for const correctness and to allow the operator to be used with const objects.

Question 18

Both parameters of the function to overload the operator << are reference parameters.

Accepted Answer

In order to overload the << operator for a custom class, both parameters (the ostream object and the class object being output) must be reference parameters. This is because overloading the << operator allows for chaining of output operations, which requires the objects to be passed by reference rather than by value.

Question 19

When writing the definition of a friend function, the name of the class and the scope resolution operator precede the name of the friend function in the function heading.

Accepted Answer

Friend functions are not member functions of a class and therefore do not have the class name or scope resolution operator preceding their names in the function definition.

Question 20

A(n) ____ function is a nonmember function that has access to all members of the class.
A) access
B) protected
C) friend
D) void

Accepted Answer

A friend function can access all members of the class, even private ones, without being a member of the class.

Quiz 13: Overloading and Templates

In C++, >> is used as a stream extraction operator and as a right shift operator.

Most operator functions can either be member functions or nonmember functions of a class.

The declaration of a friend function cannot be placed within the private part of the class.

The function that overloads the ____ operator for a class must be declared as a member of the class.

Operator functions typically return void.

The associativity of the operator = is from right to left.

Operators can be overloaded either for objects of the user-defined types, or for a combination of objects of the user-defined type and objects of the built-in type.

Which of the following function prototypes overloads the != operator for the class rectangleType?

The name of the function to overload the operator <= is ____.

Every object of a class maintains a (hidden) pointer to itself, and the name of this pointer is ____.

The general syntax to overload the stream extraction operator >> for a class is ____.

To include the operator function operator+ as a nonmember function of the class rectangleType, its prototype in the definition of rectangleType is: ____ rectangleType operator+(const rectangleType&, const rectangleType&) ;

In C++, operator is a reserved word.

A friend function does not have access to the private data members of the class.

The return type of the function operator == is ____.

When an object invokes a member function, the member function references the pointer ____ of the object.

The general form of the functions to overload the binary operators as member functions of a class is returnType operator#(____ className&) const;.

Both parameters of the function to overload the operator << are reference parameters.

When writing the definition of a friend function, the name of the class and the scope resolution operator precede the name of the friend function in the function heading.

A(n) ____ function is a nonmember function that has access to all members of the class.