Quiz 2

Question 1

The expression static_cast<int>(6.9) + static_cast<int>(7.9) evaluates to \_\_\_\_.</int></int>

A) 13
B) 14
C) 14.8
D) 15

Answer 1

13

Question 2

Which of the following is a legal identifier?

A) program!

B) program_1

C) 1program

D) program 1

Answer 2

Program_1

Question 3

An example of a floating point data type is ____.
Question options:

A) int

B) char

C) double

D) short

Answer 3

double

Question 4

Which of the following is a reserved word in C++?

A) char

B) Char

C) CHAR

D) character

Answer 4

char

Question 5

The expression static_cast<int>(9.9) evaluates to \_\_\_\_.</int>

A) 9

B) 10

C) 9.9

D) 9.0

Answer 5

9

Question 6

The escape sequence \r moves the insertion point to the beginning of the next line.
A) True
B) False

Answer 6

False

Question 7

The value of the expression 17 % 7 is ____.

A) 1

B) 2

C) 3

D) 4

Answer 7

3

Question 8

The maximum number of significant digits in float values is up to 6 or 7.

A) True
B) False

Answer 8

True

Question 9

____ is a valid int value.

A) 46,259

B) 46259

C) 462.59

D) -32.00

Answer 9

B

Question 10

A mixed arithmetic expression contains all operands of the same type.

A) True
B) False

Answer 10

False

Question 11

A comma is also called a statement terminator.

A) True
B) False

Answer 11

False

Question 12

A(n) ____ is simply a name the programmer assigns to refer to computer storage locations.

A) constant

B) expression

C) variable

D) identifier

Answer 12

variable

Question 13

A(n) ____ is a word the language sets aside for a special purpose and can be used only in a specified manner.

A) codeword

B) keyword

C) identifier

D) classname

Answer 13

keyword

Question 14

A ____ contains both data and functions appropriate for manipulating the data.

A) segment

B) block

C) class

D) function

Answer 14

class

Question 15

The C++ operator ____ provides the number of bytes used to store values for any data type named in the operator’s parentheses.

A) length()

B) size()

C) lengthof()

D) sizeof()

Answer 15

D

Question 16

____ are explanatory remarks made in a program.

A) Classes

B) Strings

C) Escape sequences

D) Comments

Answer 16

D

Question 17

____ programs are easier to develop, correct, and modify than programs constructed in some other manner.

A) Handwritten

B) Low-level

C) Modular

D) Sequential

Answer 17

Modular

Question 18

C++ is a case-sensitive language.

A) True
B) False

Answer 18

True

Question 19

A ____ begins with two slashes (//) and continues to the end of the line.

A) block comment

B) function comment

C) line comment

D) program comment

Answer 19

line comment

Question 20

If a C++ arithmetic expression has no parentheses, operators are evaluated from left to right.
A) True
B) False

Answer 20

False

Question 21

If a C++ arithmetic expression has no parentheses, operators are evaluated from left to right.
A) True
B) False

Answer 21

False

Question 22

The value of the expression 33/10, assuming both values are integral data types, is ____.

A) 0.3

B) 3

C) 3.0

D) 3.3

Answer 22

3

Question 23

The declaration int a, b, c; is equivalent to which of the following?

A) inta , b, c;

B) int a,b,c;

C) int abc;

D) int a b c;

Answer 23

int a,b,c;

Question 24

The ____ rules of a programming language tell you which statements are legal, or accepted, by the programming language.

A) semantic

B) logical

C) syntax

D) grammatical

Answer 24

C

Question 25

The maximum number of significant digits in values of the double type is 15. A) True B) False

Answer 25

True

Question 26

In C++, reserved words are the same as predefined identifiers. A) True B) False

Answer 26

False

Question 27

____ is a valid char value. A) "-129" B) ‘A’ C) "A" D) 129

Answer 27

B

Question 28

____ in C++ are any combination of letters, numbers, and special characters enclosed in quotation marks. A) Enums B) Arrays C) Strings D) Objects

Answer 28

Strings

Question 29

Modular programs are easier to develop, correct, and modify than programs constructed in some other manner. A) True B) False

Answer 29

True

Question 30

The main() function is referred to as a(n) ____ function because it tells other functions the sequence in which they execute. A) logical B) class C) driver D) auxiliary

Answer 30

Driver

Question 31

In a C++ program, one and two are double variables and input values are 10.5 and 30.6. After the statement cin >> one >> two; executes, ____. A) one = 10.5, two = 10.5 B) one = 10.5, two = 30.6 C) one = 30.6, two = 30.6 D) one = 11, two = 31

Answer 31

B

Question 32

The declaration int a, b, c; is equivalent to which of the following? A) inta , b, c; B) int a,b,c; C) int abc; D) int a b c;

Answer 32

B

Question 33

The length of the string "computer science" is ____. A) 14 B) 15 C) 16 D) 18

Answer 33

16

Question 34

Which of the following is the newline character? Question options: A)\r B) \n C) \l D) \b

Answer 34

|n

Question 35

A(n) ____ is an item used to change how the output stream of characters is displayed. A) escape sequence B) manipulator C) char object D) string

Answer 35

B

Question 36

A(n) ____ number, more commonly known as a real number, can be the number zero or any positive or negative number that contains a decimal point. A) boolean B) integer C) long int D) floating-point

Answer 36

floating-point

Question 37

Preprocessor commands end with a semicolon. A) True B) False

Answer 37

False

Question 38

The three most important and common integer types used in most applications are int, char, and ____. A) long int B) bool C) unsigned char D) long

Answer 38

bool

Question 39

Except for strings, double quotes, identifiers, and keywords, C++ ignores all white space. A) True B) False

Answer 39

True