C++ for Engineers and Scientists 4th Edition Gary J Bronson – Test Bank

 

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Sample Test

Chapter 3: Assignment, Formatting, and Interactive Input

 

TRUE/FALSE

 

1.   Program execution begins with the first statement in the body of the main() function.

 

ANS:  T                    PTS:   1                    REF:   108

 

2.   The stream manipulator lowercase displays hexadecimal digits and the exponent in scientific notation in lowercase.

 

ANS:  F                    PTS:   1                    REF:   120-121

 

3.   Numbers sent to cout are normally displayed left-justified in the display field.

 

ANS:  F                    PTS:   1                    REF:   124

 

4.   In addition to outputting integers in decimal notation, the oct and hex manipulators are used for conversions to octal and hexadecimal.

 

ANS:  T                    PTS:   1                    REF:   126

 

5.   The display of integer values in one of the three possible number systems (decimal, octal, and hexadecimal) doesn’t affect how the number is stored in a computer.

 

ANS:  T                    PTS:   1                    REF:   126

 

6.   The ostream class method setf(ios::fixed) is equivalent to the stream manipulator setiosflags(fixed).

 

ANS:  F                    PTS:   1                    REF:   129

 

7.   Assignment statements can be used to perform arithmetic computations.

 

ANS:  T                    PTS:   1                    REF:   133

 

8.   In C++, all functions, by definition, can directly return at most one value.

 

ANS:  T                    PTS:   1                    REF:   135

 

9.   Using a mathematical library function without including the preprocessor statement #include <cmath> is a common programming error in C++.

 

ANS:  T                    PTS:   1                    REF:   170

 

10.                A common programming error in C++ consists of separating all variables passed to cin with an extraction symbol, >>.

 

ANS:  F                    PTS:   1                    REF:   170

 

MULTIPLE CHOICE

 

1.   A(n) ____ statement is the most basic C++ statement for assigning values to variables and performing computations.

a.	initialization	c.	declaration
b.	assignment	d.	arithmetic

 

 

ANS:  B                    PTS:   1                    REF:   105

 

2.   A(n) ____ is any combination of constants, variables, and function calls that can be evaluated to yield a result.

a.	expression	c.	class
b.	identifier	d.	object

 

 

ANS:  A                    PTS:   1                    REF:   106

 

3.   In C++, the ____ symbol is called the assignment operator.

a.	->	c.	==
b.	>>	d.	=

 

 

ANS:  D                    PTS:   1                    REF:   108

 

4.   Because of ____, the value assigned to the variable on the left side of the assignment operator is forced into the data type of the variable to which it’s assigned.

a.	right-to-left associability	c.	coercion
b.	left-to-right associability	d.	operator precedence

 

 

ANS:  C                    PTS:   1                    REF:   110

 

5.   A(n) ____ can have a value assigned to it.

a.	lvalue	c.	uvalue
b.	rvalue	d.	dvalue

 

 

ANS:  A                    PTS:   1                    REF:   110

 

6.   In C++, the expression sum = sum + 10 can be written as ____.

a.	sum =+ 10	c.	sum += 10
b.	+sum = 10	d.	sum = 10+

 

 

ANS:  C                    PTS:   1                    REF:   112

 

7.   When the ++ operator appears before a variable it’s called a(n) ____ increment operator.

a.	suffix	c.	postfix
b.	infix	d.	prefix

 

 

ANS:  D                    PTS:   1                    REF:   115

 

8.   To control the format of numbers displayed by cout, you can include field width ____ in an output stream.

a.	separators	c.	dividers
b.	manipulators	d.	escape sequences

 

 

ANS:  B                    PTS:   1                    REF:   120

 

9.   The stream manipulator ____ sets the floating-point precision to n places.

a.	setprecision(n)	c.	setfill(‘x’)
b.	setw(n)	d.	showbase

 

 

ANS:  A                    PTS:   1                    REF:   120

 

10.                The stream manipulator ____ displays Boolean values as true and false rather than 1 and 0.

a.	booltext	c.	boolalpha
b.	bool	d.	showbool

 

 

ANS:  C                    PTS:   1                    REF:   120

 

11.                When a manipulator requiring an argument is used, the ____ header file must be included as part of the program.

a.	istream	c.	iostream
b.	ostream	d.	iomanip

 

 

ANS:  D                    PTS:   1                    REF:   122

 

12.                In C++, the default precision is set to ____ decimal places.

a.	five	c.	seven
b.	six	d.	eight

 

 

ANS:  B                    PTS:   1                    REF:   123

 

13.                To alter the default justification for a stream of data, you use the ____ manipulator.

a.	setiosflags	c.	setpos
b.	setw	d.	setjust

 

 

ANS:  A                    PTS:   1                    REF:   124

 

14.                The term ____ refers to an item, such as a variable or argument, that sets a condition usually considered active or nonactive.

a.	expression	c.	flag
b.	variable	d.	constant

 

 

ANS:  C                    PTS:   1                    REF:   125

 

15.                Another name for a manipulator uses format flags is a ____ manipulator.

a.	complex	c.	format
b.	parameterized	d.	customizable

 

 

ANS:  B                    PTS:   1                    REF:   125

 

16.                The number 023 is a(n) ____ number in C++.

a.	octal	c.	decimal
b.	hexadecimal	d.	binary

 

 

ANS:  A                    PTS:   1                    REF:   126

 

17.                The ostream class method precision(n) is equivalent to the stream manipulator ____.

a.	precision()	c.	setprecision()
b.	setfill()	d.	setw()

 

 

ANS:  C                    PTS:   1                    REF:   129

 

18.                The ostream class method setf(ios::flush) is equivalent to the stream manipulator ____.

a.	left	c.	right
b.	setiosflag(ios::flush)	d.	endl

 

 

ANS:  D                    PTS:   1                    REF:   129

 

19.                In C++, the mathematical function ____ calculates a number’s square root.

a.	square()	c.	squareRoot()
b.	sqrt()	d.	sqroot()

 

 

ANS:  B                    PTS:   1                    REF:   134

 

20.                In C++, accessing mathematical functions in a program requires including the mathematical header file ____.

a.	number	c.	cmath
b.	cnumber	d.	math

 

 

ANS:  C                    PTS:   1                    REF:   135

 

21.                The operator used to force converting a value to another type is the ____ operator.

a.	cast	c.	binary
b.	logical	d.	single

 

 

ANS:  A                    PTS:   1                    REF:   137-138

 

22.                The ____ statement is used to enter data in a program while it’s running.

a.	input	c.	cout
b.	data	d.	cin

 

 

ANS:  D                    PTS:   1                    REF:   143

 

23.                The ____ declaration qualifier specifies that the declared identifier is read-only after it’s initialized.

a.	fixed	c.	fix
b.	const	d.	unchanged

 

 

ANS:  B                    PTS:   1                    REF:   154

 

24.                Identifiers created with const are commonly referred to as symbolic constants or ____ constants.

a.	general	c.	named
b.	global	d.	valid

 

 

ANS:  C                    PTS:   1                    REF:   154

 

25.                A(n) ____ expression consists of operators and constants only.

a.	constant	c.	initialization
b.	declaration	d.	arithmetic

 

 

ANS:  A                    PTS:   1                    REF:   156

 

COMPLETION

 

1.   The simplest expression in C++ is a single ____________________.

 

ANS:  constant

 

PTS:   1                    REF:   105

 

2.   A variable can store only ____________________ value(s) at a time.

 

ANS:

one

1

 

PTS:   1                    REF:   106

 

3.   In this statement: totalWeight = factor * weight;

the arithmetic expression factor * weight is evaluated first to yield a number, which is then stored in the variable ____________________.

 

ANS:  totalWeight

 

PTS:   1                    REF:   107

 

4.   In C++, the = symbol is called the ____________________ operator.

 

ANS:  assignment

 

PTS:   1                    REF:   108

 

5.   This type of statement: sum = sum + 10; is called a(n) ____________________ statement.

 

ANS:  accumulation

 

PTS:   1                    REF:   113

 

6.   If n = 25 and this statement is executed: n–; , then the new value of n is ____________________.

 

ANS:  24

 

PTS:   1                    REF:   116

 

7.   In C++, the assignment operator has a(n) ____________________ precedence than any other arithmetic operator.

 

ANS:  lower

 

PTS:   1                    REF:   108-109

 

8.   The ____________________ manipulator must be included for each occurrence of a number inserted in the data stream sent to cout.

 

ANS:  field width

 

PTS:   1                    REF:   122

 

9.   To alter the default justification for a stream of data, you use the ____________________ manipulator.

 

ANS:  setiosflags

 

PTS:   1                    REF:   124

 

10.                A parameterized manipulator takes ____________________ flags as input.

 

ANS:  format

 

PTS:   1                    REF:   125

 

11.                Function ____________________ permits using the same function name for different arguments of different data types.

 

ANS:  overloading

 

PTS:   1                    REF:   134

 

12.                In C++, the cmath function named ____________________ is used to raise a number to a power.

 

ANS:  pow

 

PTS:   1                    REF:   135

 

13.                In C++, arguments of all trigonometric functions (sin(), cos(), and so forth) must be in ____________________.

 

ANS:  radians

 

PTS:   1                    REF:   137

 

14.                In this statement: int (a * b); , int is a(n) ____________________ operator.

 

ANS:  cast

 

PTS:   1                    REF:   138

 

15.                In C++, a variable or symbolic constant must be ____________________ before it has been used.

 

ANS:  declared

 

PTS:   1                    REF:   154

 

16.                Programs that detect and respond effectively to unexpected user input are formally referred to as ____________________ programs.

 

ANS:  robust

 

PTS:   1                    REF:   146

 

17.                The ____________________ statement puts the computer in a temporary pause (or wait) state while the user types a value.

 

ANS:  cin

 

PTS:   1                    REF:   144

 

Chapter 5: Repetition Statements

 

TRUE/FALSE

 

1.   Loop structures can evaluate the condition only at the beginning of the repeating section of code.

 

ANS:  F                    PTS:   1                    REF:   236

 

2.   The do while construct is an example of a posttest loop.

 

ANS:  T                    PTS:   1                    REF:   236

 

3.   C++’s for statement is virtually interchangeable with its while statement.

 

ANS:  T                    PTS:   1                    REF:   263

 

4.   Combining interactive data entry with the repetition capabilities of the while statement produces adaptable and powerful programs.

 

ANS:  T                    PTS:   1                    REF:   250

 

5.   As a general rule, the continue statement is less useful than the break statement.

 

ANS:  T                    PTS:   1                    REF:   258

 

6.   The for statement performs the same functions as the while statement, but uses a different form.

 

ANS:  T                    PTS:   1                    REF:   263

 

7.   The construction for ( ; count <= 20 ; ) is invalid.

 

ANS:  F                    PTS:   1                    REF:   265

 

8.   In C++, continue produces the same action for both while and for statements.

 

ANS:  F                    PTS:   1                    REF:   267

 

9.   Entering data interactively in a loop is a general technique that’s applicable to for loops.

 

ANS:  T                    PTS:   1                    REF:   275

 

10.                The do statement is particularly useful in filtering user-entered input and providing data validation checks.

 

ANS:  T                    PTS:   1                    REF:   294

 

MULTIPLE CHOICE

 

1.   A(n) ____ statement both defines the boundaries containing the repeating section of code and controls whether the code will be executed.

a.	declaration	c.	arithmetic
b.	selection	d.	repetition

 

 

ANS:  D                    PTS:   1                    REF:   236

 

2.   Three different forms of repetition statements are provided in C++: while, ____, and do while.

a.	for	c.	switch
b.	if-else	d.	if-else chain

 

 

ANS:  A                    PTS:   1                    REF:   236

 

3.   In a(n) ____ loop, the condition is tested before any statements in the loop are executed.

a.	posttest	c.	prior
b.	pretest	d.	early-test

 

 

ANS:  B                    PTS:   1                    REF:   236

 

4.   Both the ____ and for loop structures are examples of entrance-controlled loops.

a.	while	c.	do while
b.	switch	d.	if-else

 

 

ANS:  A                    PTS:   1                    REF:   236

 

5.   A loop that evaluates a condition at the end of the repeating section of code is referred to as a(n) ____ loop.

a.	entrance-controlled	c.	exit-controlled
b.	pretest	d.	aftertest

 

 

ANS:  C                    PTS:   1                    REF:   236

 

6.   ____ loops always execute the loop statements at least once before the condition is tested.

a.	Pretest	c.	entrance-controlled
b.	Posttest	d.	beforetest

 

 

ANS:  B                    PTS:   1                    REF:   236

 

7.   In a ____ loop, the condition is used to keep track of how many repetitions have occurred.

a.	pretest	c.	variable-condition
b.	posttest	d.	fixed-count

 

 

ANS:  D                    PTS:   1                    REF:   237

 

8.   In C++, a ____ loop is constructed using a while statement.

a.	while	c.	do
b.	whereas	d.	switch

 

 

ANS:  A                    PTS:   1                    REF:   238

 

9.   A(n) ____ loop is a loop that never ends.

a.	fixed	c.	infinite
b.	controlled	d.	finite

 

 

ANS:  C                    PTS:   1                    REF:   241

 

10.                The line total = total + num is an example of a(n) ____ statement.

a.	initialization	c.	accumulating
b.	declaration	d.	definition

 

 

ANS:  C                    PTS:   1                    REF:   253

 

11.                In computer programming, data values used to signal the start or end of a data series are called ____.

a.	sentinels	c.	dummies
b.	marks	d.	interrupts

 

 

ANS:  A                    PTS:   1                    REF:   256

 

12.                A(n) ____ statement forces an immediate exit from the switch, while, for and do-while statements.

a.	exit	c.	stop
b.	break	d.	halt

 

 

ANS:  B                    PTS:   1                    REF:   258

 

13.                When ____ is encountered in a loop, the next iteration of the loop begins immediately.

a.	goto	c.	resume
b.	go	d.	continue

 

 

ANS:  D                    PTS:   1                    REF:   258

 

14.                A semicolon with nothing preceding it is also a valid statement, called the ____ statement.

a.	empty	c.	blank
b.	null	d.	void

 

 

ANS:  B                    PTS:   1                    REF:   259