Deck 13: Introduction to Classes

Question 1

This type of member function may be called from a statement outside the class.

A)public
B)private
C)undeclared
D)global
E)None of these

Answer 1

public

Question 2

In a procedural program, you typically have ________ stored in a collection of variables, and a set of ________ that perform operations on the data.

A)numbers, arguments
B)parameters, arguments
C)strings, operators
D)data, functions
E)None of these

Answer 2

data, functions

Question 3

A ________ is a member function that is automatically called when a class object is ________.

A)destructor, created
B)constructor, created
C)static function, deallocated
D)utility function, declared
E)None of these

Answer 3

constructor, created

Question 4

Class declarations are usually stored here.

A)on separate disk volumes
B)in their own header files
C)in .cpp files, along with function definitions
D)under pseudonyms
E)None of these

Question 5

Examples of access specifiers are the key words:

A)near and far
B)opened and closed
C)private and public
D)table and row
E)None of these

Question 6

This directive is used to create an "include guard," which allows a program to be conditionally compiled. This prevents a header file from accidentally being included more than once.

A)#include
B)#guard
C)#ifndef
D)#endif
E)None of these

Question 7

When a constructor function accepts no arguments, or does not have to accept arguments because of default arguments, it is called a(n)________.

A)empty constructor
B)default constructor
C)stand-alone function
D)arbitrator function
E)None of these

Question 8

A C++ class is similar to one of these.

A)inline function
B)header file
C)library function
D)structure
E)None of these

Question 9

When the body of a member function is defined inside a class declaration, it is said to be ________.

A)static
B)global
C)inline
D)conditional
E)None of these

Question 10

Objects are created from abstract data types that encapsulate ________ and ________ together.

A)numbers, characters
B)data, functions
C)addresses, pointers
D)integers, floats
E)None of these

Question 11

If you do not declare an access specification, the default for members of a class is ________.

A)inline
B)private
C)public
D)global
E)None of these

Question 12

In OOP terminology, an object's member variables are often called its ________, and its member functions are sometimes referred to as its behaviors, or ________.

A)values, morals
B)data, activities
C)attributes, activities
D)attributes, methods
E)None of these

Question 13

The destructor function's return type is ________.

A)tilde
B)int
C)float
D)Nothing. Destructors have no return type.
E)None of the above

Question 14

The constructor function's return type is ________.

A)int
B)float
C)char
D)structure pointer
E)None of these

Question 15

When you dereference an object pointer, use the ________.

A)-> operator
B)<> operator
C)dot operator
D)& operator
E)None of these

Question 16

Assuming that Rectangle is a class name, the statement:

A)declares an object of class Rectangle
B)assigns the value of *BoxPtr to the object Rectangle
C)defines a Rectangle pointer variable called BoxPtr
D)is illegal in C++
E)None of these

Question 17

A class is a(n)________ that is defined by the programmer.

A)data type
B)function
C)method
D)attribute
E)None of these

Question 18

Members of a class object are accessed with the ________.

A)dot operator
B)cin object
C)extraction operator
D)stream insertion operator
E)None of these

Question 19

This is used to protect important data.

A)public access specifier
B)private access specifier
C)protect()member function
D)class protection operator, @
E)None of these

Question 20

This type of member function may be called only from a function that is a member of the same class.

A)public
B)private
C)global
D)local
E)None of these

Question 21

A class may have this many default constructor(s).

A)only one
B)more than one
C)a maximum of two
D)any number
E)None of these

Question 22

What is the output of the following program?

A)The program runs, but with no output.
B)77
C)0
D)The program will not compile.

Question 23

This is automatically called when an object is destroyed.

A)constructor function
B)specification deallocator
C)destructor function
D)coroner function
E)None of these

Question 24

The constructor function may not accept arguments.

Question 25

You must declare all data members of a class before you declare member functions.

Question 26

What is the output of the following program?

A)The program runs, but with no output.
B)77
C)Hello!
D)The program will not compile.

Question 27

If a local variable and a global variable have the same name within the same program, the ________ resolution operator must be used.

A)variable
B)ambiguity
C)scope
D)global
E)None of these

Question 28

More than one destructor function may be defined for a class.

Question 29

Assume that myCar is an instance of the Car class, and that the Car class has a member function named accelerate. Which of the following is a valid call to the accelerate member function?

A)Car->accelerate();
B)myCar::accelerate();
C)myCar.accelerate();
D)myCar:accelerate();

Question 30

Class objects can be defined prior to the class declaration.

Question 31

The process of object-oriented analysis can be viewed as the following steps:

A)Identify objects, then define objects' attributes, behaviors, and relationships
B)Define data members and member functions, then assign a class name
C)Declare private and public variables, prototype functions, then write code
D)Write the main()function, then determine which classes are needed
E)None of these

Question 32

When a member function is defined outside of the class declaration, the function name must be qualified with the ________.

A)class name, followed by a semicolon
B)class name, followed by the scope resolution operator
C)name of the first object
D)private access specifier
E)None of these

Question 33

More than one constructor function may be defined for a class.

Question 34

For the following code, which statement is not true?

A)x is available to code that is written outside the class.
B)The name of the class is Point.
C)x, y, and z are called members of the class.
D)z is available to code that is written outside the class.

Question 35

Objects in an array are accessed with ________, just like any other data type in an array.

A)subscripts
B)parentheses
C)#include statements
D)output format manipulators
E)None of these

Question 36

What is the output of the following program?

A)The program runs, but with no output.
B)0
C)Hello!
D)The program will not compile.

Question 37

Whereas object-oriented programming centers on the object, procedural programming centers on functions.

Question 38

The constructor function always has the same name as ________.

A)the first private data member
B)the first public data member
C)the class
D)the first object of the class
E)None of these

Question 39

Object-oriented programming is centered around the object, which encapsulate together both the data and the functions that operate on the data.

Question 40

A destructor function can have zero to many parameters.

Question 41

You must use the private access specification for all data members of a class.

Question 42

One purpose that constructor functions are often used for is to allocate memory that will be needed by the object.

Question 43

One purpose that destructor functions are often used for is to free memory that was allocated by the object.

Question 44

When using smart pointers to dynamically allocate objects in C++ 11, it is unnecessary to delete the dynamically allocated objects because the smart pointer will automatically delete them.

Question 45

A private member function is useful for tasks that are internal to the class, but is not directly called by statements outside the class.

Question 46

When an object is defined without an argument list for its constructor, the compiler automatically calls the object's default constructor.

Question 47

If you do not declare a destructor function, the compiler will furnish one automatically.