BTE 320 Ch. 9 (structs)

Question 1

A function can return a value of the type struct

Answer 1

True

Question 2

Aggregate input/output operations are allowed on a struct variable

Answer 2

False

Question 3

You can decalre struct variables when you define a struct

Answer 3

True

Question 4

In structs, you access a component by using the struct name together with the relative position of the component

Answer 4

False

Question 5

To access a structure member (component), you use the struct variable name together with the member name; these names are separated by a dot (period)

Answer 5

True

Question 6

You can use an assignment statement to copy the contents of one struct into another struct of the same type

Answer 6

True

Question 7

Relational operations can be used on struct variables

Answer 7

False

Question 8

Data in a struct variable must be read one member at a time

Answer 8

True

Question 9

A function can return a value of the type array

Answer 9

False

Question 10

struct rectangleData
{
 double length;
 double width;
 double area;
 double perimeter;
};
rectangleData bigRect;

Which of the following statements is valid in C++?

a. cin&raquo_space; bigRect.length&raquo_space; width;
b. cout &laquo_space;bigRect.length;
c. cout &laquo_space;bigRect;
d. cout &laquo_space;length;

Answer 10

b

Question 11

0. A struct is typically a ____ data structure.
   a. simple b. dynamic
   c. heterogeneous d. linked

Answer 11

c. heterogenenous

Question 12

The components of a struct are called the ____ of the struct.

a. variables b. identifiers
c. elements d. members

Answer 12

b. identifiers

Question 13

Which of the following struct definitions is correct in C++?
a. struct studentType
{
 int ID;
};

b. struct studentType
{
 string name;
 int ID;
 double gpa;
}

c. int struct studentType
{
ID;
}

d. struct studentType
{
int ID = 1;
};

Answer 13

a.

Question 14

Consider the following struct definition:
struct rectangleData
{
 double length;
 double width;
 double area;
 double perimeter;
};
Which of the following variable declarations is correct?

a. rectangle rectangleData;
b. struct rectangleData();
c. rectangleData myRectangle;
d. rectangleData rectangle = new rectangleData();

Answer 14

c. rectangleData myRectangle;

Question 15

Typically, in a program, a struct is defined ____ in the program.

a. in the main function
b. before the definitions of all the functions
c. after the definitions of all the functions
d. in any function

Answer 15

b. before the definitions of all the functions

Question 16

An array name and index are separated using ____.

a. curly brackets b. square brackets
c. a dot d. a comma

Answer 16

b. square brackets

Question 17

The syntax for accessing a struct member is structVariableName____.

a. .memberName b. *memberName
c. [memberName] d. $memberName

Answer 17

a. .memberName

Question 18

Consider the following statements:
struct rectangleData
{
 double length;
 double width;
 double area;
 double perimeter;
};
rectangleData bigRect;
Which of the following statements correctly initializes the component length of bigRect?

a. bigRect = {10};
b. bigRect.length = 10;
c. length[0]= 10;
d. bigRect[0]= 10

Answer 18

b. bigRect.length = 10;

Question 19

In C++, the ____ symbol is an operator, called the member access operator.

a. :(colon)
b. .(dot)
c. ,(comma)
d. $ (dollar sign)

Answer 19

b. .(dot)

Question 20

struct rectangleData
{
 double length;
 double width;
 double area;
 double perimeter;
};
rectangleData bigRect;
Which of the following statements is valid in C++?

Answer 20

b. cin&raquo_space; bigRect.length;

Question 21

struct personalInfo
{
 string name;
 int age;
 double height;
 double weight;
};
struct commonInfo
{
 string name;
 int age;
};
personalInfo person1, person2;
commonInfo person3, person4;

Which of the following statements is valid in C++?

a. person1 = person3;
b. person2 = person1;
c. person2 = person3;
d. person2 = person4;

Answer 21

b. person2 = person1;

Question 22

Consider the following statements:
struct studentType1
{
 string name;
 int ID;
 double gpa;
};
studentType1 student1, student2;
struct studentType2
{
 string name;
 int ID;
 double gpa;
};
studentType2 student3, student4;
Which of the following statements is valid in C++?

a. student2 = student3;
b. student1 = student4;
c. student2.ID = ID;
d. student1.ID = student3.ID;

Answer 22

d. student.ID = student3.ID;

Question 23

You can assign the value of one struct variable to another struct variable of ____ type.

a. a simple data
b. the same
c. an array
d. any

Answer 23

b. the same

Question 24

To compare struct variables, you compare them ____.

a. by reference
b. by value
c. index-wise
d. member-wise

Answer 24

member-wise

Question 25

``` Consider the following statements: struct rectangleData { double length; double width; double area; double perimeter; }; rectangleData bigRect; rectangleData smallRect; Which of the following statements is legal in C++? ``` a. if (bigRect == smallRect) b. if (bigRect != smallRect) c. if (bigRect.length == width) d. if (bigRect.length == smallRect.width)

Answer 25

d. if (bigRect.length == smallRect.width)

Question 26

``` Consider the following statements. struct circleData { double radius; double area; double circumference; }; circleData circle; Which of the following statements is valid in C++? a. cin >> circle.radius; circle.area = 3.14 * radius * radius; b. cin >> circle.radius; circle.area = 3.14 * circle.radius * radius; c. cin >> circle; d. cin >> circle.radius; ```

Answer 26

d. cin >> circle.radius;

Question 27

``` Consider the following statements: struct rectangleData { double length; double width; double area; double perimeter; }; rectangleData bigRect; ``` Which of the following statements is valid in C++? a. cin >> bigRect.length >> width; b. cout << bigRect.length; c. cout << bigRect; d. cout << length;

Answer 27

b. cout << bigRect.length;

Question 28

A struct variable can be passed as a parameter ____. a. only by const b. only by reference c. only by value d. either by value or by reference

Answer 28

d. either by value or by reference

Question 29

Which of the following aggregate operations can be executed on array variables? a. Arithmetic b. Assignment c. Function returning a value d. Parameter passing by reference

Answer 29

d. parameter passing by reference

Question 30

Which of the following is an allowable aggregate operation on a struct? a. Arithmetic b. Assignment c. Input/output d. Comparison

Answer 30

b. assignment

Question 31

A list has two items associated with it: ____. a. the length and the references b. the values and the references c. the indexes and the length d. the values and the length

Answer 31

d. the values and the length

Question 32

``` Consider the following statements: struct supplierType { string name; int supplierID; }; struct applianceType { supplierType supplier; string modelNo; double cost; }; applianceType applianceList[25]; Which of the following best describes applianceList? ``` a. It is a multidimensional array. b. It is a struct. c. It is an array of structs. d. It is a struct of arrays.

Answer 32

c. It is an array of structs.

Question 33

``` Consider the following function prototype: int seqSearch(const listType& list, int searchItem); The actual parameter cannot be modified by ____. ``` a. seqSearch b. listType c. list d. searchItem

Answer 33

c. list

Question 34

``` Consider the following statements: struct supplierType { string name; int supplierID; }; struct applianceType { supplierType supplier; string modelNo; double cost; }; applianceType applianceList[25]; ``` Which of the following statements correctly initializes the cost of each appliance to 0? a. applianceList.cost = 0; b. applianceList.cost[25] = 0; c. for (int j = 1; j < 25; j++) applianceList.cost[j] = 0; d. for (int j = 0; j < 25; j++) applianceList.cost[j] = 0;

Answer 34

d. for (int j = 0; j < 25; j++) | applianceList.cost[j] = 0;