chapter 13

Question 1

1) 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

Answer 1

B

Question 2

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

Answer 2

D

Question 3

A C++ class is similar to one of these.
A) inline function
B) header file
C) library function
D) structure
E) None of these

Answer 3

c

Question 4

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

Answer 4

C

Question 5

This is used to protect important data.
A) public access specifier
B) private access specifier
C) protect() member function
D) class protection oprator , @

Answer 5

B

Question 6

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

Answer 6

B

Question 7

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

Answer 7

C

Question 8

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

Answer 8

C

Question 9

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, declare
E) None of these

Answer 9

B

Question 10

The constructor function’s return type is ________.
A) int
B) float
C) char
D) structure pointer
E) None of these

Answer 10

E

Question 11

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

Answer 11

D

Question 12

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

Answer 12

B

Question 13

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 13

A

Question 14

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

Answer 14

B

Question 15

15) 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 15

D

Question 16

A class is a(n) ________ that is defined by the programmer.
A) data type
B) function
C) method
D) attribute
E) None of these

Answer 16

A

Question 17

17) 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

Answer 17

A

Question 18

Assuming that Rectangle is a class name, the statement:
Rectangle *BoxPtr;
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

Answer 18

C

Question 19

When you dereference an object pointer, use the ________.
A) -> operator
B) <> operator
C) dot operator
D) & operator
E) None of these

Answer 19

A

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

Answer 20

B

Question 21

he 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

Answer 21

C

Question 22

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

Answer 22

C

Question 23

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

Answer 23

A

Question 24

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

Answer 24

A

Question 25

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

Answer 25

A

Question 26

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

Answer 26

B

Question 27

f 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

Answer 27

C

Question 28

For the following code, which statement is not true? class Point { private: double y; double z; public: double x; }; 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.

Answer 28

D

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();

Answer 29

C

Question 30

What is the output of the following program? #include using namespace std; class TestClass { public: TestClass(int x) { cout << x << endl; } TestClass() { cout << "Hello!" << endl; } }; int main() { TestClass test; return 0; } A) The program runs, but with no output. B) 0 C) Hello! D) The program will not compile.

Answer 30

C

Question 31

What is the output of the following program? #include using namespace std; class TestClass { public: TestClass(int x) { cout << x << endl; } TestClass() { cout << "Hello!" << endl; } }; int main() { TestClass test(77); return 0; } A) The program runs, but with no output. B) 77 C) Hello! D) The program will not compile.

Answer 31

B

Question 32

What is the output of the following program? #include using namespace std; class TestClass { private: int val; void showVal() { cout << val << endl; } public: TestClass(int x) { val = x; } }; int main() { TestClass test(77); test.showVal(); return 0; } A) The program runs, but with no output. B) 77 C) 0 D) The program will not compile.

Answer 32

D

Question 33

True/False: Whereas object-oriented programming centers on the object, procedural programming centers on functions.

Answer 33

True

Question 34

True/False: Class objects can be defined prior to the class declaration.

Answer 34

False

Question 35

True/False: The constructor function may not accept arguments.

Answer 35

False

Question 36

True/False: A destructor function can have zero to many parameters.

Answer 36

False

Question 37

True/False: More than one constructor function may be defined for a class.

Answer 37

True

Question 38

True/False: More than one destructor function may be defined for a class.

Answer 38

False

Question 39

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

Answer 39

True

Question 40

True/False: You must declare all data members of a class before you declare member functions.

Answer 40

False

Question 41

True/False: You must use the private access specification for all data members of a class.

Answer 41

true

Question 42

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

Answer 42

True

Question 43

True/False: If you do not declare a destructor function, the compiler will furnish one automatically

Answer 43

True

Question 44

True/False: When an object is defined without an argument list for its constructor, the compiler automatically calls the object's default constructor

Answer 44

True

Question 45

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

Answer 45

True

Question 46

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

Answer 46

True

Question 47

True/False: 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.

Answer 47

True