Passing a variable pointer as a constant _____

eliminates the need to name the pointer in the function

protects the contents pointed to by the pointer from change

eliminates the need to name the pointer in the function

eliminates the need to give the pointer a type in the function

causes a copy of the pointer to be produced in the function

If you assign a default value to any variable in a function prototype's parameter list, then _____

all parameters to the left of that variable must have default values

all other parameters in the function prototype must have default values

all parameters to the right of that variable must have default values

all parameters to the left of that variable must have default values

no other parameters in that prototype can have default values

A function's purpose is to print customer data. Which of the following is the best name for this function?

lastFunction(). It is the final function called in most programs, and this name identifies the function's timing

pcd(). It's short for "print customer data" and takes few keystrokes

Printcustomerdata(). It states everything the function will do

printCustomer(). It states the function's purpose and is easy to read

lastFunction(). It is the final function called in most programs, and this name identifies the function's timing

Declaring variables is advantageous because it

avoids errors from misspelled variable names {b) helps the linker work efficiently

simplifies the writing of very short programs

One drawback to returning an error code from a function is _____

a function that returns an error code will identify all returns as errors

functions cannot return error codes

error codes must be integers, and some functions can't return an integer

a function can return only one value, so it can return only the error code

a function that returns an error code will identify all returns as errors

If you omit any constructor argument when you instantiate an object, you must use default values

for all parameters to the left of the argument

for all parameters to the constructor

for all parameters to the right of the argument

for all parameters to the left of the argument

The program can access the private members of a class

None of the above - the program cannot access the private members of a class in any way

only through other private members of the class

only through other public members of the class

None of the above - the program cannot access the private members of a class in any way

If you want to override constructor default values for an object you are instantiating, you must also override

all parameters to the right of that value

all other parameters to that constructor

all parameters to the left of that value

all parameters to the right of that value

no other parameters to that constructor

A member function uses the correct object when you call it because

the address of the function is passed to another function

a copy of the object is passed to the function

the address of the object is passed to the function

the address of the function is passed to another function

the address of the object is returned from the function

A major advantage of inheritance is

not having to think about how objects will be used

reducing the time it takes to create new objects

not having to think about how objects will be used

reducing the amount of memory required to execute a progrma

enabling people who have not studied programming to create useful applications

The generic type in a template function

cannot be T for functions you create, but may be for C++'s built-in functions

C++ allows you to define the same functions more than once in the same program _____

if the definitions are identical

if the definitions are included in two separate #include files

if the definitions are located in a single #include file that is included more than once

C++ does not allow you to define the same functions more than once in the same program

The return type you code for all constructors is _____

the same type as the first data member defined in the class

describes "has a" relationships

describes "is a kind of" relationships

describes "has a" relationships

shows the same relationships as an organization chart

shows the same relationships as a family tree

The statement double val[15]={44.123456};

assigns the value 44.123456 to all members of the array val

assigns the value 44.123456 to val[0] and 0 to the rest of the members

assigns the value 44.12345 to val[1] and val[5]

The expression c = i++ causes

i to be incremented by 1 and then the value of i assigned to c

the value of i assigned to c and then i incremented by 1

i to be incremented by 1 and then the value of i assigned to c

The first element in a string is

the first character in the string

the name of the array holding the string

542 + Mcqs in Object Oriented Programming Using Cpp in Computer Science Page 8 McqOptions

351.	A function that is called automatically each time an object is created is a(n)
A.	constructor
B.	contractor
C.	builder
D.	architect
Answer» B. contractor

Discussion

352.	The element of an array is
A.	the name of the array
B.	a member of an array
C.	a value assigned to an array
D.	All of the above
Answer» C. a value assigned to an array

Discussion

353.	You _____ write your own container classes
A.	must
B.	may
C.	should not
D.	must not
Answer» C. should not

Discussion

354.	Passing a variable pointer as a constant _____
A.	protects the contents pointed to by the pointer from change
B.	eliminates the need to name the pointer in the function
C.	eliminates the need to give the pointer a type in the function
D.	causes a copy of the pointer to be produced in the function
Answer» B. eliminates the need to name the pointer in the function

Discussion

355.	The most efficient data type for a variable that stores the number 4.6e20 is the _____ data type
A.	Character
B.	Double
C.	Float
D.	Long Integer
Answer» D. Long Integer

Discussion

356.	If you assign a default value to any variable in a function prototype's parameter list, then _____
A.	all other parameters in the function prototype must have default values
B.	all parameters to the right of that variable must have default values
C.	all parameters to the left of that variable must have default values
D.	no other parameters in that prototype can have default values
Answer» C. all parameters to the left of that variable must have default values

Discussion

357.	Assume you want to compare the character stored in the initial variable to the letter a. Which of the following conditions should you use in the if statement? (Be sure the condition will handle a or A.)
A.	(initial = 'a' or 'A')
B.	(initial == 'a' or 'A')
C.	(toupper(initial) = 'A')
D.	(toupper(initial) == 'A')
Answer» E.

Discussion

358.	The functions go in the _____ section of a class definition
A.	declaration
B.	implementation
C.	prototype
D.	functioning
Answer» C. prototype

Discussion

359.	A function's purpose is to print customer data. Which of the following is the best name for this function?
A.	pcd(). It's short for "print customer data" and takes few keystrokes
B.	Printcustomerdata(). It states everything the function will do
C.	printCustomer(). It states the function's purpose and is easy to read
D.	lastFunction(). It is the final function called in most programs, and this name identifies the function's timing
Answer» D. lastFunction(). It is the final function called in most programs, and this name identifies the function's timing

Discussion

360.	The compiler converts your C++ instructions into _____
A.	edited code
B.	object code
C.	source code
D.	translated code
Answer» C. source code

Discussion

361.	A program will have one function prototype for each function defined in the programmer-defined section of the program. (Assume that the programmer-defined section is located below the main function.)
A.	1
B.
C.	cin
D.	cout
Answer» B.

Discussion

362.	Errors in a program are called
A.	accidents
B.	annoyances
C.	bugs
D.	mistakes
Answer» D. mistakes

Discussion

363.	Declaring variables is advantageous because it
A.	avoids errors from misspelled variable names {b) helps the linker work efficiently
B.	simplifies the writing of very short programs
C.	All of the above
D.	None of the above
Answer» D. None of the above

Discussion

364.	One drawback to returning an error code from a function is _____
A.	functions cannot return error codes
B.	error codes must be integers, and some functions can't return an integer
C.	a function can return only one value, so it can return only the error code
D.	a function that returns an error code will identify all returns as errors
Answer» D. a function that returns an error code will identify all returns as errors

Discussion

365.	A function that changes the state of the cout object is called a(n) _____
A.	member
B.	adjuster
C.	manipulator
D.	operator
Answer» D. operator

Discussion

366.	If you omit any constructor argument when you instantiate an object, you must use default values
A.	for all parameters to the constructor
B.	for all parameters to the right of the argument
C.	for all parameters to the left of the argument
D.	for no other parameters
Answer» C. for all parameters to the left of the argument

Discussion

367.	You have declared an integer pointer called point You have also declared an integer called number. Which statement is the correct format?
A.	point = number;
B.	point = *number;
C.	point = &number;
D.	point = +number;
Answer» D. point = +number;

Discussion

368.	The standard output stream, which refers to the computer screen, is called
A.	cin
B.	cout
C.	stin
D.	stout
Answer» C. stin

Discussion

369.	Files whose names end in .h are called _____ files
A.	handy
B.	header
C.	helper
D.	helping
Answer» C. helper

Discussion

370.	The program can access the private members of a class
A.	directly
B.	only through other private members of the class
C.	only through other public members of the class
D.	None of the above - the program cannot access the private members of a class in any way
Answer» D. None of the above - the program cannot access the private members of a class in any way

Discussion

371.	To execute a C++ program, you first need to translate the source code into object code. This process is called
A.	coding
B.	compiling
C.	sourcing
D.	translating
Answer» C. sourcing

Discussion

372.	The generic name used for unexpected errors that occur during the execution of a program is
A.	infractions
B.	exceptions
C.	deviations
D.	anomalies
Answer» C. deviations

Discussion

373.	To hide a data member from the program, you must declare the data member in the _____ section of the class
A.	concealed
B.	confidential
C.	hidden
D.	private
Answer» E.

Discussion

374.	Typing the function's name as Main, rather than main, is an example of
A.	an entry error
B.	a function error
C.	a logic error
D.	a syntax error
Answer» E.

Discussion

375.	If you want to override constructor default values for an object you are instantiating, you must also override
A.	all other parameters to that constructor
B.	all parameters to the left of that value
C.	all parameters to the right of that value
D.	no other parameters to that constructor
Answer» C. all parameters to the right of that value

Discussion

376.	A member function uses the correct object when you call it because
A.	a copy of the object is passed to the function
B.	the address of the object is passed to the function
C.	the address of the function is passed to another function
D.	the address of the object is returned from the function
Answer» C. the address of the function is passed to another function

Discussion

377.	The two statements that can be used to change the flow of control are
A.	if and switch
B.	if and while
C.	switch and do-while
D.	break and continue
Answer» B. if and while

Discussion

378.	A major advantage of inheritance is
A.	reducing the time it takes to create new objects
B.	not having to think about how objects will be used
C.	reducing the amount of memory required to execute a progrma
D.	enabling people who have not studied programming to create useful applications
Answer» B. not having to think about how objects will be used

Discussion

379.	Any #include files may contain
A.	constants
B.	variables
C.	functions
D.	All of the above
Answer» E.

Discussion

380.	A base class may also be called a
A.	child class
B.	subclass
C.	derived class
D.	parent class
Answer» E.

Discussion

381.	The most efficient data type for a variable that the number 20000 is the _____ data type
A.	Character
B.	Double
C.	Float
D.	Long Integer
Answer» E.

Discussion

382.	With commercial classes, the function source code is usually________
A.	printed on high-quality paper
B.	poorly written
C.	provided on a disk
D.	provided in object form
Answer» E.

Discussion

383.	The String data type is an extension of the _____ data type
A.	Character
B.	Double
C.	Letter
D.	Long
Answer» B. Double

Discussion

384.	When the function int someFunction(char c) throw( ) is executed, _____
A.	it can throw anything
B.	it may throw an integer
C.	it may throw a character
D.	it may not throw anything
Answer» E.

Discussion

385.	The generic type in a template function
A.	must be T
B.	can be T
C.	cannot be T for functions you create, but may be for C++'s built-in functions
D.	cannot be T
Answer» C. cannot be T for functions you create, but may be for C++'s built-in functions

Discussion

386.	The set of instructions for how to tie a bow is an example of the _____ structure
A.	control
B.	repetition
C.	selection
D.	sequence
Answer» E.

Discussion

387.	The logical NOT operator represented by is a
A.	unary operator
B.	binary operator
C.	ternary operator
D.	octal operator
Answer» B. binary operator

Discussion

388.	To send output to a file, you need to include the _____ header file in your program
A.	file.h
B.	fstream.h
C.	iomanip.h
D.	iostream.h
Answer» C. iomanip.h

Discussion

389.	C++ allows you to define the same functions more than once in the same program _____
A.	if the definitions are identical
B.	if the definitions are included in two separate #include files
C.	if the definitions are located in a single #include file that is included more than once
D.	C++ does not allow you to define the same functions more than once in the same program
Answer» E.

Discussion

390.	A data member holds a 1 or 0 depending on whether taxes have been paid. The best identifier for this member is _____
A.	taxes
B.	paidTaxes
C.	taxesArePaid
D.	code
Answer» C. taxesArePaid

Discussion

391.	The return type you code for all constructors is _____
A.	void
B.	the class type
C.	the same type as the first data member defined in the class
D.	no type
Answer» E.

Discussion

392.	A class hierarchy
A.	describes "is a kind of" relationships
B.	describes "has a" relationships
C.	shows the same relationships as an organization chart
D.	shows the same relationships as a family tree
Answer» B. describes "has a" relationships

Discussion

393.	The statement double val[15]={44.123456};
A.	assigns the value 44.123456 to all members of the array val
B.	assigns the value 44.123456 to val[0] and 0 to the rest of the members
C.	gives an error message
D.	assigns the value 44.12345 to val[1] and val[5]
Answer» C. gives an error message

Discussion

394.	The expression c = i++ causes
A.	the value of i assigned to c and then i incremented by 1
B.	i to be incremented by 1 and then the value of i assigned to c
C.	value of i assigned to c
D.	i to be incremented by 1
Answer» B. i to be incremented by 1 and then the value of i assigned to c

Discussion

395.	A function that returns no values to the program that calls it is _____
A.	not allowed in C++
B.	type void
C.	type empty
D.	type barren
Answer» C. type empty

Discussion

396.	The first element in a string is
A.	the name of the string
B.	the first character in the string
C.	the length of the string
D.	the name of the array holding the string
Answer» C. the length of the string

Discussion

397.	You can use the C++ _____ function to assign a value to a String variable
A.	assign
B.	copy
C.	string
D.	strcopy
Answer» E.

Discussion

398.	Which of the following statements uses the computer's clock to initialize the random number generator?
A.	srand(time);
B.	srand(time(NULL));
C.	time(srand);
D.	time(srand(NULL));
Answer» C. time(srand);

Discussion

399.	A program that predicts the exact sequence in which events will take place is said to be ________
A.	compiled
B.	interpreted
C.	procedural
D.	object-oriented
Answer» D. object-oriented

Discussion

400.	An address is a _____ , while a pointer is a _____
A.	array, variable
B.	constant, variable
C.	variable, position
D.	variable, location
Answer» E.

Discussion

Explore topic-wise MCQs in Computer Science.

A function that is called automatically each time an object is created is a(n)

The element of an array is

You _____ write your own container classes

Passing a variable pointer as a constant _____

The most efficient data type for a variable that stores the number 4.6e20 is the _____ data type

If you assign a default value to any variable in a function prototype's parameter list, then _____

Assume you want to compare the character stored in the initial variable to the letter a. Which of the following conditions should you use in the if statement? (Be sure the condition will handle a or A.)

The functions go in the _____ section of a class definition

A function's purpose is to print customer data. Which of the following is the best name for this function?

The compiler converts your C++ instructions into _____

A program will have one function prototype for each function defined in the programmer-defined section of the program. (Assume that the programmer-defined section is located below the main function.)

Errors in a program are called

Declaring variables is advantageous because it

One drawback to returning an error code from a function is _____

A function that changes the state of the cout object is called a(n) _____

If you omit any constructor argument when you instantiate an object, you must use default values

You have declared an integer pointer called point You have also declared an integer called number. Which statement is the correct format?

The standard output stream, which refers to the computer screen, is called

Files whose names end in .h are called _____ files

The program can access the private members of a class

To execute a C++ program, you first need to translate the source code into object code. This process is called

The generic name used for unexpected errors that occur during the execution of a program is

To hide a data member from the program, you must declare the data member in the _____ section of the class

Typing the function's name as Main, rather than main, is an example of

If you want to override constructor default values for an object you are instantiating, you must also override

A member function uses the correct object when you call it because

The two statements that can be used to change the flow of control are

A major advantage of inheritance is

Any #include files may contain

A base class may also be called a

The most efficient data type for a variable that the number 20000 is the _____ data type

With commercial classes, the function source code is usually________

The String data type is an extension of the _____ data type

When the function int someFunction(char c) throw( ) is executed, _____

The generic type in a template function

The set of instructions for how to tie a bow is an example of the _____ structure

The logical NOT operator represented by is a

To send output to a file, you need to include the _____ header file in your program

C++ allows you to define the same functions more than once in the same program _____

A data member holds a 1 or 0 depending on whether taxes have been paid. The best identifier for this member is _____

The return type you code for all constructors is _____

A class hierarchy

The statement double val[15]={44.123456};

The expression c = i++ causes

A function that returns no values to the program that calls it is _____

The first element in a string is

You can use the C++ _____ function to assign a value to a String variable

Which of the following statements uses the computer's clock to initialize the random number generator?

A program that predicts the exact sequence in which events will take place is said to be ________

An address is a _____ , while a pointer is a _____

An address is a _ , while a pointer is a _