Deck 11: More About Classes and Object-Oriented Programming

Question 1

allows us to create new classes based on existing classes.

A)The copy constructor
B)Polymorphism
C)Inheritance
D)Function overloading
E)None of the above

Answer 1

C

Question 2

The class destructor is called before the class destructor.

A)public, private
B)base, derived
C)derived, base
D)private, public
E)None of the above

Answer 2

C

Question 3

A good reason for overloading an operator is to enable it to

A)operate on no operands.
B)outperform its C language counterparts.
C)be used with types defined by the programmer.
D)operate on more operands than in its standard definition.
E)None of the above

Answer 3

C

Question 4

It is a good idea to make a copy constructor's parameters by specifying the _ _ keyword in the parameter list.

A)static, static
B)constant, const
C)global, glob
D)inline, inline
E)None of the above

Question 5

A situation in which every object of a class A has a pointer to an object of a class B, and the objects of the class B may outlive objects of class A, is called

A)composition.
B)aggregation.
C)a has- A relation.
D)an is=A relation.
E)None of the above

Question 6

In the statement class Car:public Vehicle, which is the base class?

A)public
B)class
C)Car
D)Vehicle
E)None of the above

Question 7

C++ allows you to overload

A)compiler errors.
B)operators and functions.
C)preprocessor directives.
D)undefined variables.
E)None of the above

Question 8

If a member variable is declared _ , all objects of that class share access to that variable.

A)inline
B)dynamic
C)default
D)static
E)None of the above

Question 9

The process of having a class contain an instance of another class is known as

A)object composition.
B)operator overloading.
C)object overloading.
D)dynamic composition.
E)None of the above

Question 10

In an inheritance situation, the new class that you create from an existing class is known as the

A)derived class.
B)inheritee.
C)child class.
D)both A and C
E)None of the above

Question 11

To overload the + operator, you would write a function called

A)overload +.
B)operator.overload(+).
C)function +.
D)operator +.
E)None of the above

Question 12

An operator can work with programmer- defined data types.

A)overloaded
B)unconditional
C)undefined
D)inline
E)None of the above

Question 13

Protected members of a base class are like _ , with the exception that they may be accessed by derived classes.

A)static members
B)constructor functions
C)public members
D)private members
E)None of the above

Question 14

is commonly used to extend a class, or to give it additional capabilities.

A)Privacy
B)The destructor
C)Inheritance
D)The constructor
E)None of the above

Question 15

A reason to overload the is to write classes that have array- like behavior.

A)square brackets [ ]
B)curly braces { }
C)parentheses ( )
D)colon : :
E)None of the above

Question 16

A member function that is declared cannot use the this pointer.

A)private
B)inline
C)public
D)static
E)None of the above

Question 17

When you redefine the way a standard operator works when it is used with class objects, you have the operator.

A)overloaded
B)reformatted
C)reassigned
D)overwhelmed
E)None of the above

Question 18

If you do not furnish a(n)for a class, a default will be provided for you by the compiler.

A)assignment operator
B)constructor
C)copy constructor
D)All of the above
E)None of the above

Question 19

Each object of a class has its own copy of the class's

A)static member functions.
B)instance member variables.
C)static member variables.
D)All of the above
E)None of the above

Question 20

In the statement class Car:protected Vehicle, what is being protected?

A)Base class members
B)Future inherited classes
C)Derived class data
D)Derived class functions
E)None of the above

Question 21

A(n)member variable may be accessed before any objects of the class have been declared.

A)inline
B)public
C)static
D)private
E)None of the above

Question 22

The operator may be used to assign one object to another.
A)&

A)⁼⁼
B)<>
D)⁼
E)None of the above

Question 23

When you derive a class from an existing class, you

A)must add both new data and new functions.
B)can add new data, but cannot add new functions.
C)can add both new data and new functions.
D)can add new functions, but cannot add new data.
E)None of the above

Question 24

Arguments are passed to the base class destructor function by the class function.

A)base, destructor
B)derived, constructor
C)base, constructor
D)derived, destructor
E)None of the above

Question 25

To dereference an object pointer and access one of the object's members, use the

A)-> operator.
B)& operator.
C)<> operator.
D)dot operator.
E)None of the above

Question 26

When overloading the operator ++, is used to distinguish preincrement from postincrement.

A)the keyword void
B)a parameterless data type
C)the placeholder [ ]
D)a dummy integer parameter
E)None of the above

Question 27

The base class's affects the way its members are inherited by the derived class.

A)name
B)return data type
C)access specification
D)both A and B
E)None of the above

Question 28

members of a base class are never accessible to a derived class.

A)Private
B)Protected
C)Public
D)A, B, and C
E)None of the above

Question 29

The class constructor is called before the class constructor.

A)public, private
B)base, derived
C)private, public
D)derived, base
E)None of the above

Question 30

When a class contains a pointer to dynamically allocated memory, it is a good idea to equip the class with

A)a copy constructor.
B)a static constructor and an overloaded comparison operator.
C)an inline constructor.
D)a dynamically allocated constructor.
E)None of the above

Question 31

In the statement class Car:protected Vehicle, which is the derived class?

A)protected
B)Car
C)Vehicle
D)The answer cannot be determined from the information given.
E)None of the above

Question 32

Some C++ operators cannot be overloaded by the programmer.

Question 33

If you do not furnish a(n), an automatic memberwise copy will be performed when one object is assigned to another object.

A)default constructor function
B)overloaded assignment operator
C)overloaded copy operator
D)overloaded constructor function
E)None of the above

Question 34

C++ requires that a copy constructor's parameter be

A)a reference to an object.
B)an integer data type.
C)a floating- point data type.
D)a pointer variable.
E)None of the above

Question 35

A derived class may become a base class, if another class is derived from it.

Question 36

A constructor that takes a single parameter of a type other than its class is called a convert constructor.

Question 37

Object composition is useful for creating a _ relationship between classes.

A)friend
B)conditional
C)static
D)has- a
E)None of the above

Question 38

A(n)is a special function that is called whenever a new object is created and initialized with data from another object of the same class.

A)assignment function
B)static function
C)destructor
D)copy constructor
E)None of the above

Question 39

A _ function is not a member of a class, but it has access to the private members of the class.

A)friend
B)constructor
C)static
D)destructor
E)None of the above

Question 40

The is a special built- in pointer that is available to a class's instance member functions.

A)overloaded -> operator
B)~destructor *ptr
C)&constructor pointer
D)this pointer
E)None of the above

Question 41

When you overload an operator, you cannot change the number of operands taken by the operator.

Question 42

You may overload any C++ operator, and you may use the operator function to define non- standard operators, such as @ and ^.

Question 43

A member function of a derived class may not have the same name as a member function of a base class.

Question 44

A static member function can be called independently of any object of the class.

Question 45

In an inheritance situation, you can't pass arguments to a base class constructor.

Question 46

By default, when an object is assigned to another, each member of one object is copied to its counterpart in the other object.

Question 47

C++ permits you to overload the sizeof operator.

Question 48

You can overload the conditional operator to make it function as an unconditional operator.

Question 49

The base class access specification can be viewed as a filter that base class members must pass through when becoming inherited members of a derived class.

Question 50

In C++, if you overload the < operator, you must also overload the > operator.

Question 51

It is possible to declare an entire class as a friend of another class.

Question 52

When a class contains a pointer to dynamically allocated memory, it a good idea to have the class overload the assignment operator.

Question 53

If you overload the prefix ++ operator, the postfix ++ operator is automatically overloaded also.

Question 54

When you overload the << operator, you must also overload the >> operator.

Question 55

The this pointer is a special built- in pointer that is automatically passed as a hidden argument to all instance member functions.

Question 56

A derived class may not have any classes derived from it.

Question 57

When arguments must be passed to the base class constructor, they are passed from the derived class constructor's header line.

Question 58

A static member variable can be used when there are no objects of the class in existence.

Question 59

A static member function cannot be called if no objects of the class exist.

Question 60

When a class declares an entire class as its friend, the friendship status is reciprocal. That is, each class's member functions have free access to the other's private members.

Question 61

The this pointer is automatically passed to static member functions of a class.

Question 62

A base class cannot contain a pointer to one of its derived classes.

Question 63

The structure member selector operator . cannot be overloaded.

Question 64

If a function f is a friend of a class A, and the class A is a friend of a class B, then the function f is able to access private members of B.