Chapter 12

Question 1

True or false:
A pointer variable whose content is a memory address.

Answer 1

True

Question 2

True or false:
In C++, pointer variables are declared using the reserved word pointer.

Answer 2

False

Question 3

True or false:
In the statement:
int* p, q;
p and q are pointer variables.

Answer 3

False

Question 4

True or false:
The dereferencing operator is also known as the indirection operator and refers to the object to which its operand points.

Answer 4

True

Question 5

True or false:
In C++, the dot operator has a lower precedence than the dereferencing operator.

Answer 5

False

Question 6

True or false:
In C++, the member access operator arrow is&raquo_space;.

Answer 6

False

Question 7

True or false:
Variables that are created during program execution are called static variables.

Answer 7

False

Question 8

True or false:
Given the declaration
int *p;
The statement
p = new int[50];
dynamically allocates an array of 50 components of type int and p contains the base address of the array.

Answer 8

True

Question 9

True or false:
A memory leak is an unused memory space that cannot be allocated.

Answer 9

True

Question 10

True or false:
If p is a pointer variable, the statement p = p + 1; is valid in C++.

Answer 10

True

Question 11

In C++, you declare a pointer by using the _______ symbol.

Answer 11

*

Question 12

The code int *p; declared p to be a(n) _____ variable.

Answer 12

pointer

Question 13

In C++, ________ is called the address of operator.

Answer 13

&

Question 14

What is the value of x after the following statements execute?
int x = 25;
int *p;
p = &x;
*p = 46;

Answer 14

46

Question 15

What is the output of the following statements?
int x = 33;
int *q;
q = &x;
cout &laquo_space;*q &laquo_space;endl;

Answer 15

33

Question 16

What is the output of the following code?
int *p;
int x;
x = 76;
p = &x;
*p = 43;
cout &laquo_space;x &laquo_space;”, “ &laquo_space;*p &laquo_space;endl;

Answer 16

43, 43

Question 17

What is the output of the following code?
int *p;
int x;
x = 12;
p = &x;
cout &laquo_space;x &laquo_space;”, “;
*p = 81;
cout &laquo_space;*p &laquo_space;endl;

Answer 17

12, 81

Question 18

Which of the following can be used to initialize a pointer variable?

Answer 18

nullptr

Question 19

The C++ operator ____ is used to create dynamic variables.

Answer 19

new

Question 20

The C++ operator _________ is used to destroy dynamic variables.

Answer 20

delete

Question 21

Which of the following operations is allowed on pointer variables?

Answer 21

==

Question 22

Which of the following arithmetic operations is allowed on pointer variables?

Answer 22

increment

Question 23

Given the statement double *p;, the statement p++; will increment the value of p by _____ byte(s).

Answer 23

eight

Question 24

Given the declaration int *a;, the statement a = new int[50]; dynamically allocates an array of 50 components of the type ______.

Answer 24

int

Question 25

An array created during the execution of a program is called a(n) _______ array.

Answer 25

dynamic

Question 26

In a ________ copy, two or more pointers of the same type point to the same memory.

Answer 26

shallow

Question 27

In a ______ copy, two or more pointers have their own data.

Answer 27

deep

Question 28

A class _________ automatically executes whenever a class object goes out of scope.

Answer 28

destructor

Question 29

Consider the following statement:
ptrMemberVarType objectThree(objectOne);
The values of the member variables of objectOne are being copied into the corresponding member variables of objectThree. This initialization is called the ________.

Answer 29

member-wise initialization

Question 30

The ______ constructor is executed when an object is declared and initialized by using the value of another object.

Answer 30

copy

Question 31

Which of the following would be appropriate syntax for the heading of a copy constructor for a class called rulerType?

Answer 31

rulerType(const rulerType& myRuler)

Question 32

In C++, virtual functions are declared using the reserved word _______.

Answer 32

virtual

Question 33

In ________ binding, the necessary code to call a specific function is generated by the compiler.

Answer 33

static

Question 34

Run-time binding is also known as ________ binding.

Answer 34

dynamic

Question 35

The _________ operator can be used to return the address of a private data member of a class.

Answer 35

address of

Question 36

Consider the following declaration of a struct:
struct studentType{
char name[26];
double gpa;
int sID;
char grade;
};
studentType student;
studentType studentPtr;
The statement (studentPtr).gpa = 2.5; is equivalent to _______________ = 2.5;

Answer 36

studentPtr ->gpa

Question 37

Consider the following statements:
void pointerParameters(int* &p, double *q)
{…}
In the function pointerParameters, the parameter p is a(n) __________ parameter.

Answer 37

reference

Question 38

Consider the following statements:
void pointerParameters(int* &p, double *q)
{…}
In the function pointerParameters, the parameter q is a(n) __________ parameter.

Answer 38

value

Question 39

The statement that declared board to be an array of six pointers wherein each pointer is of type int is: int ______

Answer 39

*board[6]

Question 40

The copy constructor automatically executes when, as a parameter, an object is passed by __________.

Answer 40

value

Question 41

The binding of virtual functions occurs at program __________ time.

Answer 41

execution

Question 42

The _______________ of a base class automatically makes the destructor of a derived class virtual.

Answer 42

virtual destructor

Question 43

Consider the following statements:
class shape{
public:
virtual void draw() = 0;
virtual void move(double x, double y) = 0;
…}
The code above is an example of a(n) ________ class definition.

Answer 43

abstract