301 + Mcqs in Programming McqOptions

1.	The mechanism of deriving a new class from another class
A.	Polymorphism
B.	Inheritance
C.	Encapsulation
D.	Data hiding
Answer» C. Encapsulation

Discussion

2.	The same function name having different tasks
A.	Function overloading
B.	Constructor overloading
C.	Polymorphism
D.	Operator overloading
Answer» B. Constructor overloading

Discussion

3.	A function calling itself
A.	Inline function
B.	Static function
C.	Friend function
D.	Recursion
Answer» E.

Discussion

4.	The variable that contains the address of constant or variable
A.	Function
B.	Array
C.	pointer
D.	structure
Answer» D. structure

Discussion

5.	The process of making a function to exhibit different behaviors in different instances is called ‐‐‐‐‐.
A.	function overloading
B.	operator overloading
C.	inheritance
D.	none of these
Answer» B. operator overloading

Discussion

6.	The process of making an operator to exhibit different behaviors in different instances is called ‐‐‐‐‐.
A.	function overloading
B.	operator overloading
C.	inheritance
D.	none of these
Answer» C. inheritance

Discussion

7.	‐‐‐‐‐ refer to the names of variables, functions, arrays, classes, etc.
A.	Identifiers
B.	Operators
C.	Punctuators
D.	Manipulators
Answer» B. Operators

Discussion

8.	‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ model is also known as linear sequential model.
A.	prototype model
B.	waterfall model
C.	spiral model
D.	none of these
Answer» C. spiral model

Discussion

9.	A member function for unary operator overloading takes‐‐‐‐ ‐arguments.
A.	Zero
B.	One
C.	Two
D.	None
Answer» B. One

Discussion

10.	Which allows you to create a derived class that inherits properties from more than one base class?
A.	Multilevel inheritance
B.	Multiple inheritance
C.	Hybrid Inheritance
D.	Hierarchical Inheritanc
Answer» C. Hybrid Inheritance

Discussion

11.	Consider the following statements:int x = 22,y=15; x = (x>y) ? (x+y) : (x‐y); What will be the value of x after executing these statements?
A.	22
B.	37
C.	7
D.	Error. Cannot be executed
Answer» C. 7

Discussion

12.	In C++ default return type for all the functions is ‐‐‐‐‐‐‐‐‐.
A.	int
B.	void
C.	float
D.	none of these
Answer» B. void

Discussion

13.	The keyword to convert constant into variable
A.	Const_cast
B.	reinterpret_cast
C.	static_cast
D.	implicit
Answer» B. reinterpret_cast

Discussion

14.	In OOP which cocept provides the idea of reusability.
A.	inheritance
B.	encapsulation
C.	data hiding
D.	polymorphism
Answer» B. encapsulation

Discussion

15.	Treating the address of the object of the derived class as the address of the base class means
A.	Up casting
B.	down casting
C.	early binding
D.	late binding
Answer» B. down casting

Discussion

16.	By default, the members of a C++ class are:
A.	Private
B.	Public
C.	Protected
D.	None of these
Answer» B. Public

Discussion

17.	A friend function for binary operator overloading takes‐‐‐‐ ‐arguments.
A.	Zero
B.	One
C.	Two
D.	None
Answer» D. None

Discussion

18.	A __________ is a constructor that either has no parameters, or if it has parameters, all theparameters have default values.
A.	default constructor
B.	copy constructor
C.	Both A and B
D.	None of these
Answer» B. copy constructor

Discussion

19.	Arguments of a functions are separated with
A.	comma (,)
B.	semicolon (;)
C.	colon (:)
D.	None of these
Answer» B. semicolon (;)

Discussion

20.	The result of a Relational operation is always
A.	either True or False
B.	is less than or is more than
C.	is equal or less or more
D.	All of these
Answer» B. is less than or is more than

Discussion

21.	The function contain in the ios class to specify number of decimal places
A.	width()
B.	precision()
C.	fill()
D.	setf()
Answer» C. fill()

Discussion

22.	The class that derived from standard library ios contain input functions
A.	Ios
B.	iostream
C.	istream
D.	ostream
Answer» D. ostream

Discussion

23.	Which of the following is a correct comment?
A.	/ Comments /
B.	Comment
C.	/* Comment */
D.	{ Comment }
Answer» B. Comment

Discussion

24.	The technique of Hiding internal details in an object is called‐‐‐‐‐
A.	encapsulation
B.	functions
C.	Abstraction
D.	inheritance
Answer» D. inheritance

Discussion

25.	A friend function for unary operator overloading takes ‐‐‐‐ ‐arguments.
A.	Zero
B.	One
C.	Two
D.	None
Answer» C. Two

Discussion

26.	A ‐‐‐‐‐‐‐‐ is a memory portion of memory to store a determined value.
A.	Constant
B.	Variable
C.	Keyword
D.	Separators
Answer» C. Keyword

Discussion

27.	Strings are character arrays. The last index of it contains the null‐terminated character
A.	\n
B.	\t
C.	\0
D.	\1
Answer» D. \1

Discussion

28.	Find the false statement from the following
A.	An identifier in C++ is defined as an unlimited sequence of characters.
B.	The first character must be an alphabet followed by digits or underscore or alphabets.
C.	Identifiers are not case sensitive.
D.	You can use both uppercase and lower case alphabets in the same identifier.
Answer» D. You can use both uppercase and lower case alphabets in the same identifier.

Discussion

29.	The function that act as an interface to base & derived class
A.	function overloading
B.	virtual function
C.	constructor
D.	friend
Answer» C. constructor

Discussion

30.	When following piece of code is executed, what happens?b = 3; a = b++;
A.	a contains 3 and b contains 4
B.	a contains 4 and b contains 4
C.	a contains 4 and b contains 3
D.	a contains 3 and b contains 3
Answer» B. a contains 4 and b contains 4

Discussion

31.	int d=int (a) + int (b);This statement is an example of ‐‐‐‐‐‐‐
A.	Implicit conversion
B.	Explicit conversion
C.	Internal conversion
D.	External conversion
Answer» C. Internal conversion

Discussion

32.	In case of arguments passed by values when calling a function such as z=addidion(x,y),
A.	Any modifications to the variables x & y from inside the function will not have any effect outside the function.
B.	The variables x and y will be updated when any modification is done in the function
C.	The variables x and y are passed to the function addition
D.	None of above are valid.
Answer» B. The variables x and y will be updated when any modification is done in the function

Discussion

33.	An identifier may ‐‐‐‐‐‐‐‐
A.	Strings, that varies at program execution.
B.	Those numbers, that is frequently required in programs.
C.	The name of a variable.
D.	None of these
Answer» D. None of these

Discussion

34.	The standard ASCII characters have numeric values from ‐‐‐ to ‐‐‐‐
A.	0 to 128
B.	0 to 127
C.	0 to 255
D.	0 to 256
Answer» C. 0 to 255

Discussion

35.	The function used to display one line at a time
A.	get()
B.	put()
C.	getline()
D.	write()
Answer» E.

Discussion

36.	The function used to receive one line at a time
A.	get()
B.	put()
C.	getline()
D.	write()
Answer» D. write()

Discussion

37.	Which of the following is selection statement in C++?
A.	Break
B.	goto
C.	exit
D.	switch
Answer» E.

Discussion

38.	The operator “>>” is called ‐‐‐‐‐
A.	Extraction operator
B.	Insertion operator
C.	Put to operator
D.	Printing operator
Answer» B. Insertion operator

Discussion

39.	Identify the unary operator.
A.	? , :
B.	++
C.	+
D.	%
Answer» C. +

Discussion

40.	The continue statement
A.	resumes the program if it is hanged
B.	resumes the program if it was break was applied
C.	skips the rest of the loop in current iteration
D.	all of above
Answer» D. all of above

Discussion

41.	C++ is originally developed by
A.	Nicolas Wirth
B.	Dennis Ritchi
C.	Bjarne Stroustrup
D.	Ken Thompson
Answer» D. Ken Thompson

Discussion

42.	The >> operator is known as‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐.
A.	put to
B.	get from
C.	extraction
D.	both b & c
Answer» E.

Discussion

43.	A ‐‐‐‐‐‐‐‐ for an object is a request for execution of a procedure.
A.	object
B.	functions
C.	dynamic binding
D.	message
Answer» E.

Discussion

44.	The class that is not used to create object
A.	Abstract class
B.	Virtual base class
C.	Multiple inheritance
D.	Nesting of classes
Answer» B. Virtual base class

Discussion

45.	When a function is defined inside a class,it is treated as ‐‐‐‐‐‐‐
A.	Inline function
B.	Inside definition
C.	Inline definition
D.	Data function
Answer» B. Inside definition

Discussion

46.	OOPs follows ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ approach during program design.
A.	top down
B.	bottom ‐up
C.	both a & b
D.	none of these
Answer» C. both a & b

Discussion

47.	‐‐‐‐‐ are the reserved words of the programming language.
A.	Tokens
B.	Literals
C.	Separators
D.	Keywords
Answer» E.

Discussion

48.	‐‐‐‐‐‐‐‐ contains function prototype for the standard input and output functions.
A.	iomanip.h
B.	iostream.h
C.	stdlib.h
D.	both a & b
Answer» C. stdlib.h

Discussion

49.	What happens when a class with parameterized constructors and having no default constructor is used in a program and we create an object that needs a zero‐argument constructor?
A.	Compile‐time error.
B.	Preprocessing error.
C.	Runtime error.
D.	Runtime exception.
Answer» B. Preprocessing error.

Discussion

50.	The class that derived from standard library ios contain output functions
A.	Ios
B.	iostream
C.	istream
D.	ostream
Answer» E.

Discussion

Explore topic-wise MCQs in Testing Subject.

The mechanism of deriving a new class from another class

The same function name having different tasks

A function calling itself

The variable that contains the address of constant or variable

The process of making a function to exhibit different behaviors in different instances is called ‐‐‐‐‐.

The process of making an operator to exhibit different behaviors in different instances is called ‐‐‐‐‐.

‐‐‐‐‐ refer to the names of variables, functions, arrays, classes, etc.

‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ model is also known as linear sequential model.

A member function for unary operator overloading takes‐‐‐‐ ‐arguments.

Which allows you to create a derived class that inherits properties from more than one base class?

Consider the following statements:int x = 22,y=15; x = (x>y) ? (x+y) : (x‐y); What will be the value of x after executing these statements?

In C++ default return type for all the functions is ‐‐‐‐‐‐‐‐‐.

The keyword to convert constant into variable

In OOP which cocept provides the idea of reusability.

Treating the address of the object of the derived class as the address of the base class means

By default, the members of a C++ class are:

A friend function for binary operator overloading takes‐‐‐‐ ‐arguments.

A __________ is a constructor that either has no parameters, or if it has parameters, all theparameters have default values.

Arguments of a functions are separated with

The result of a Relational operation is always

The function contain in the ios class to specify number of decimal places

The class that derived from standard library ios contain input functions

Which of the following is a correct comment?

The technique of Hiding internal details in an object is called‐‐‐‐‐

A friend function for unary operator overloading takes ‐‐‐‐ ‐arguments.

A ‐‐‐‐‐‐‐‐ is a memory portion of memory to store a determined value.

Strings are character arrays. The last index of it contains the null‐terminated character

Find the false statement from the following

The function that act as an interface to base & derived class

When following piece of code is executed, what happens?b = 3; a = b++;

int d=int (a) + int (b);This statement is an example of ‐‐‐‐‐‐‐

In case of arguments passed by values when calling a function such as z=addidion(x,y),

An identifier may ‐‐‐‐‐‐‐‐

The standard ASCII characters have numeric values from ‐‐‐ to ‐‐‐‐

The function used to display one line at a time

The function used to receive one line at a time

Which of the following is selection statement in C++?

The operator “>>” is called ‐‐‐‐‐

Identify the unary operator.

The continue statement

C++ is originally developed by

The >> operator is known as‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐.

A ‐‐‐‐‐‐‐‐ for an object is a request for execution of a procedure.

The class that is not used to create object

When a function is defined inside a class,it is treated as ‐‐‐‐‐‐‐

OOPs follows ‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐‐ approach during program design.

‐‐‐‐‐ are the reserved words of the programming language.

‐‐‐‐‐‐‐‐ contains function prototype for the standard input and output functions.

What happens when a class with parameterized constructors and having no default constructor is used in a program and we create an object that needs a zero‐argument constructor?

The class that derived from standard library ios contain output functions