A function's single most important role is to

accept arguments and provide a return value

help organize a program into conceptual units

Student senior(); is a(n)_________

constructor call with no arguments

constructor call with all default arguments

prototype for a function that returns a student object

The preprocessor directive always ends with

neither a semicolon nor a comma

Which is a good reason for passing a variable's address to a function?

the function will have a copy of the variable

the function cannot change the value of the variable in the calling function

C++ requires that all variables used in a function be passed by address

the function needs to change multiple variable values

When you instantiate a derived class object, a constructor for the derived class _____

is called prior to the base class constructor

is called simultaneously with the base class constructor

Which is a good guideline for creating function names?

Use all lowercase letters to identify the functions as C++ functions

Use long names to reduce the likelihood of creating a duplicate function name

Use abbreviations as much as possible to save both keystrokes and memory

Avoid the use of digits because they are easily confused with letters

One way in which a structure differs from an array is that _____

a structure must have members that; are all the same type

a structure may have members of more than one type

a structure must have members that; are all the same type

art array may have members of more than one type

there is no difference between a structure and an array

A derived class _____ override attributes of a parent class

may if the two classes have the same name

An expression contains relational, assignment and arithmetic operators. In the absence of parentheses, the order of evaluation will be

relational, arithmetic, assignment

assignment, relational, arithmetic

arithmetic, relational, assignment

relational, arithmetic, assignment

assignment, arithmetic, relational

An auxiliary function _____

return information about data members

changes the state of data members

When a new class is derived from an existing class, the derived class member functions _____ have names that differ from base class function names

may if the two classes have the same name

A function that is prototyped as double calculate(int num); may______

receive an integer constant such as 5

A function in a derived class that has the same name as a function in the parent class

will cause an error message to display

will override the base class function

will cause an error message to display

will be overridden by the base class function

will execute immediately often the base class function executes

A function in a derived class that has the same name as a function in the parent class _____

will be overridden by the base class function

will cause an error message to display

will override the base class function

will be overridden by the base class function

will execute immediately after the base class function executes

You can pass _____ to functions

copies of individual structure members

542 + Mcqs in Object Oriented Programming Using Cpp in Computer Science Page 5 McqOptions

201.	The printer can be accessed using the predefined filename _____
A.	printer file
B.	print
C.	cout
D.	PRN, LPT1, etc
Answer» E.

Discussion

202.	Which of the following creates a String named constant called partNo, whose value is AB45?
A.	const char[4] partNo = "AB45";
B.	const char[5] partNo = 'AB45';
C.	const char[5] partNo = "AB45";
D.	const char partNo[5] = "AB45";
Answer» E.

Discussion

203.	The statement i*=3 is equivalent to
A.	i = 3*
B.	i = 3
C.	i* = 3
D.	i = i * 3
Answer» E.

Discussion

204.	The arguments that determine the state of the cout object are called _____
A.	classes
B.	manipulators
C.	format flags
D.	state controllers
Answer» D. state controllers

Discussion

205.	The standard input stream, which refers to the keyboard, is called
A.	cin
B.	cout
C.	stin
D.	stout
Answer» B. cout

Discussion

206.	A function's single most important role is to
A.	give a name to a block of code
B.	reduce program size
C.	accept arguments and provide a return value
D.	help organize a program into conceptual units
Answer» E.

Discussion

207.	Which of the following will store the letter H in a Character variable named initial?
A.	initial = 'H'
B.	initial = 'H';
C.	initial = "H"
D.	initial = "H";
Answer» C. initial = "H"

Discussion

208.	Student senior(); is a(n)_________
A.	constructor call with no arguments
B.	object instantiation
C.	constructor call with all default arguments
D.	prototype for a function that returns a student object
Answer» E.

Discussion

209.	The preprocessor directive always ends with
A.	a comma
B.	a semicolon
C.	neither a semicolon nor a comma
D.	"/"
Answer» D. "/"

Discussion

210.	The preprocessor directive always starts with the symbol
A.	%
B.	&
C.	#
D.	""
Answer» D. ""

Discussion

211.	Using new may result in less _____ memory than using an array
A.	wasted
B.	used
C.	RAM
D.	ROM
Answer» B. used

Discussion

212.	The scope resolution operator is
A.	a comma
B.	a semicolon
C.	a colon
D.	two colons
Answer» E.

Discussion

213.	Which of the following creates an animal object named dog?
A.	animal "dog";
B.	animal dog;
C.	dog "animal";
D.	dog animal;
Answer» C. dog "animal";

Discussion

214.	The arguments that determine the state of the cout object are called
A.	classes
B.	manipulators
C.	format flags or state flags
D.	state controllers
Answer» D. state controllers

Discussion

215.	The highest level of cohesion is
A.	functional cohesion
B.	temporal cohesion
C.	logical cohesion
D.	sequential cohesion
Answer» B. temporal cohesion

Discussion

216.	Object is to class as _____
A.	library is to book
B.	mother is to daughter
C.	Plato is to philosopher
D.	president is to Lincoln
Answer» D. president is to Lincoln

Discussion

217.	Which is a good reason for passing a variable's address to a function?
A.	the function will have a copy of the variable
B.	the function cannot change the value of the variable in the calling function
C.	C++ requires that all variables used in a function be passed by address
D.	the function needs to change multiple variable values
Answer» E.

Discussion

218.	The while loop is referred to as a(n) _____ loop because the loop condition is tested at the beginning of the loop
A.	beginning
B.	initial
C.	pretest
D.	priming
Answer» D. priming

Discussion

219.	The measure of how well the operations in a function relate to one another is _____
A.	coupling
B.	cohesion
C.	adhesion
D.	conversion
Answer» C. adhesion

Discussion

220.	When you instantiate a derived class object, a constructor for the derived class _____
A.	is not called
B.	is called prior to the base class constructor
C.	is called simultaneously with the base class constructor
D.	None of the above
Answer» E.

Discussion

221.	Separating parts of a program into units that remain unaffected by other parts of a program is the concept known as _____
A.	intrusion
B.	volatility
C.	encapsulation
D.	protection
Answer» D. protection

Discussion

222.	Which of the following is the inequality operator?
A.	!=
B.	=
C.	==
D.	-->
Answer» B. =

Discussion

223.	When an object-oriented program detects an error within a function, the function _________
A.	throws an exception
B.	throws a fit
C.	catches a message
D.	catches an exception
Answer» B. throws a fit

Discussion

224.	The C++ expression p --> val means the same thing as
A.	*p.val
B.	*(p.val)
C.	(*p).vai
D.	p.val
Answer» D. p.val

Discussion

225.	Which of the following statements will create and initialize a feelnfo array named fee?
A.	fee feeInfo = {{0}, {0}};
B.	fee as feeInfo = 0, 0;
C.	feeInfo fee = 0, 0;
D.	feeInfo fee = [{0}, {0}];
Answer» E.

Discussion

226.	The instructions you enter into the computer are called the _____
A.	edited code
B.	machine code
C.	object code
D.	source code
Answer» E.

Discussion

227.	Evaluate the following expression: 4 >6 \|\| 10 < 2 * 6
A.	1
B.
Answer» B.

Discussion

228.	You indicate a variable is a pointer variable by placing a(n) _____ in front of the variable's name
A.	asterisk
B.	ampersand
C.	dollar sign
D.	exclamation point
Answer» B. ampersand

Discussion

229.	Which is a good guideline for creating function names?
A.	Use all lowercase letters to identify the functions as C++ functions
B.	Use long names to reduce the likelihood of creating a duplicate function name
C.	Use abbreviations as much as possible to save both keystrokes and memory
D.	Avoid the use of digits because they are easily confused with letters
Answer» E.

Discussion

230.	One way in which a structure differs from an array is that _____
A.	a structure may have members of more than one type
B.	a structure must have members that; are all the same type
C.	art array may have members of more than one type
D.	there is no difference between a structure and an array
Answer» B. a structure must have members that; are all the same type

Discussion

231.	Which of the following instructions tells C++ to merge the source code from the iostream.h file into the current file?
A.	#include <iostream.h>
B.	#include iostream.h
C.	#include <iostream.h>
D.	#merge iostream.h
Answer» E.

Discussion

232.	A derived class _____ override attributes of a parent class
A.	may
B.	may if the two classes have the same name
C.	must
D.	must not
Answer» B. may if the two classes have the same name

Discussion

233.	An expression contains relational, assignment and arithmetic operators. In the absence of parentheses, the order of evaluation will be
A.	assignment, relational, arithmetic
B.	arithmetic, relational, assignment
C.	relational, arithmetic, assignment
D.	assignment, arithmetic, relational
Answer» C. relational, arithmetic, assignment

Discussion

234.	The code that you enter into a C++ program is called _____
A.	console code
B.	object code
C.	project code
D.	source code
Answer» E.

Discussion

235.	An auxiliary function _____
A.	return information about data members
B.	changes the state of data members
C.	performs an action or service
D.	creates and destroys objects
Answer» D. creates and destroys objects

Discussion

236.	Format flags may be combined using the _____
A.	bitwise OR operator(\|)
B.	logical OR operator (\|\|)
C.	bitwise AND operator (&)
D.	logical AND operator (&&)
Answer» B. logical OR operator (\|\|)

Discussion

237.	When a new class is derived from an existing class, the derived class member functions _____ have names that differ from base class function names
A.	may
B.	may if the two classes have the same name
C.	must
D.	must not
Answer» B. may if the two classes have the same name

Discussion

238.	The main() function is always
A.	a called function
B.	a calling function
C.	recursive function
D.	used at the end of the program
Answer» C. recursive function

Discussion

239.	Which of the following statements creates a named constant called driverAge whose value is 16?
A.	const driverAge = 16;
B.	const short driverAge = 16;
C.	driverAge =16;
D.	driverAge const =16;
Answer» C. driverAge =16;

Discussion

240.	An exception specification begins with the keyword _____
A.	exception
B.	try
C.	throw
D.	catch
Answer» D. catch

Discussion

241.	Static variables are sometimes called
A.	class variables
B.	functional variables
C.	dynamic variables
D.	auto variables
Answer» B. functional variables

Discussion

242.	A function that is prototyped as double calculate(int num); may______
A.	receive an integer constant such as 5
B.	receive an integer variable
C.	either (a) or (b)
D.	neither (a) nor (b)
Answer» D. neither (a) nor (b)

Discussion

243.	Which of the following pairs of identifier name(s) are(is) considered to be identical?
A.	name, names
B.	smith, johnsmith
C.	identifier 1, identifier_2
D.	charl, char_l
Answer» D. charl, char_l

Discussion

244.	You declare a function with a function _____, which is typically entered at the beginning of the program, below the #include directives
A.	call
B.	prototype declaration
C.	definition
D.	pointer
Answer» C. definition

Discussion

245.	Which of the following is the extraction operator?
A.	>>
B.	<<
C.	//
D.	/*
Answer» B. <<

Discussion

246.	A function in a derived class that has the same name as a function in the parent class
A.	will override the base class function
B.	will cause an error message to display
C.	will be overridden by the base class function
D.	will execute immediately often the base class function executes
Answer» B. will cause an error message to display

Discussion

247.	A function in a derived class that has the same name as a function in the parent class _____
A.	will cause an error message to display
B.	will override the base class function
C.	will be overridden by the base class function
D.	will execute immediately after the base class function executes
Answer» C. will be overridden by the base class function

Discussion

248.	You can pass _____ to functions
A.	copies of individual structure members
B.	copies of entire structures
C.	pointers to structures
D.	All of the above
Answer» E.

Discussion

249.	The store of memory available to programs is the _____
A.	store
B.	stack
C.	pile
D.	heap
Answer» E.

Discussion

250.	A variable declared in a function is called a(n) _____ variable
A.	area
B.	global
C.	local
D.	reference
Answer» D. reference

Discussion

Explore topic-wise MCQs in Computer Science.

The printer can be accessed using the predefined filename _____

Which of the following creates a String named constant called partNo, whose value is AB45?

The statement i*=3 is equivalent to

The arguments that determine the state of the cout object are called _____

The standard input stream, which refers to the keyboard, is called

A function's single most important role is to

Which of the following will store the letter H in a Character variable named initial?

Student senior(); is a(n)_________

The preprocessor directive always ends with

The preprocessor directive always starts with the symbol

Using new may result in less _____ memory than using an array

The scope resolution operator is

Which of the following creates an animal object named dog?

The arguments that determine the state of the cout object are called

The highest level of cohesion is

Object is to class as _____

Which is a good reason for passing a variable's address to a function?

The while loop is referred to as a(n) _____ loop because the loop condition is tested at the beginning of the loop

The measure of how well the operations in a function relate to one another is _____

When you instantiate a derived class object, a constructor for the derived class _____

Separating parts of a program into units that remain unaffected by other parts of a program is the concept known as _____

Which of the following is the inequality operator?

When an object-oriented program detects an error within a function, the function _________

The C++ expression p --> val means the same thing as

Which of the following statements will create and initialize a feelnfo array named fee?

The instructions you enter into the computer are called the _____

Evaluate the following expression: 4 >6 || 10 < 2 * 6

You indicate a variable is a pointer variable by placing a(n) _____ in front of the variable's name

Which is a good guideline for creating function names?

One way in which a structure differs from an array is that _____

Which of the following instructions tells C++ to merge the source code from the iostream.h file into the current file?

A derived class _____ override attributes of a parent class

An expression contains relational, assignment and arithmetic operators. In the absence of parentheses, the order of evaluation will be

The code that you enter into a C++ program is called _____

An auxiliary function _____

Format flags may be combined using the _____

When a new class is derived from an existing class, the derived class member functions _____ have names that differ from base class function names

The main() function is always

Which of the following statements creates a named constant called driverAge whose value is 16?

An exception specification begins with the keyword _____

Static variables are sometimes called

A function that is prototyped as double calculate(int num); may______

Which of the following pairs of identifier name(s) are(is) considered to be identical?

You declare a function with a function _____, which is typically entered at the beginning of the program, below the #include directives

Which of the following is the extraction operator?

A function in a derived class that has the same name as a function in the parent class

A function in a derived class that has the same name as a function in the parent class _____

You can pass _____ to functions

The store of memory available to programs is the _____

A variable declared in a function is called a(n) _____ variable