Programming in C++ Online Test 1 – Randomized MCQs

With each visit of this Programming in C++ online Quiz / Practice Test, the list of MCQs / Objective Questions presented will be different, offering you a diverse set of practice opportunities. This variability encourages you to practice extensively, refining the accuracy of your answers and your overall grasp of the content. By utilizing this resource, you can hone your skills and become more adept at managing time constraints during actual exams.

Test Instructions
Question type	Randomized MCQs.Changes every time you visit the test
Total Number of Questions	30
Time Limit	20 Minutes
Points	1 Point for each Question

Remaining Time: 0 MINUTES

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Question 1 of 30

Q-1.What is the output of the following codechar symbol[3]={‘a’,‘b’,‘c’}; for (int index=0; index<3; index++) cout << symbol [index];

a b c

“abc”

abc

‘abc’

Your Answer:Correct

Your Answer:Incorrect

Question 2 of 30

Q-2.A static function

should be called when an object is destroyed.

is closely connected with and individual object of a class.

can be called using the class name and function name.

is used when a dummy object must be created.

Your Answer:Correct

Your Answer:Incorrect

Question 3 of 30

Q-3.Which of the following will produce a value 10 if x = 9.7?

floor(x)

abs(x)

log(x)

ceil(x)

Your Answer:Correct

Your Answer:Incorrect

Question 4 of 30

Q-4.A class defined within another class is:

Nested class

Inheritance

Containership

Encapsulation

Your Answer:Correct

Your Answer:Incorrect

Question 5 of 30

Q-5.The address of a variable temp of type float is

*temp

&temp

float& temp

float temp&

Your Answer:Correct

Your Answer:Incorrect

Question 6 of 30

Q-6.A struct is the same as a class except that

there are no member functions.

all members are public.

cannot be used in inheritance hierarchy.

it does have a this pointer.

Your Answer:Correct

Your Answer:Incorrect

Question 7 of 30

Q-7.A template class

is designed to be stored in different containers

works with different data types

generates objects which must be identical

generates classes with different numbers of member functions

Your Answer:Correct

Your Answer:Incorrect

Question 8 of 30

Q-8.Declaration of a pointer reserves memory space

for the object.

for the pointer.

both for the object and the pointer.

none of these.

Your Answer:Correct

Your Answer:Incorrect

Question 9 of 30

Q-9.The operator that cannot be overloaded is

( )

Your Answer:Correct

Your Answer:Incorrect

Question 10 of 30

Q-10.The members of a class, by default, are

public

protected

private

mandatory to specify

Your Answer:Correct

Your Answer:Incorrect

Question 11 of 30

Q-11.this pointer

implicitly points to an object

can be explicitly used in a class

can be used to return an object

All of the above

Your Answer:Correct

Your Answer:Incorrect

Question 12 of 30

Q-12.In access control in a protected derivation, visibility modes will change as follows:

private, public and protected become protected

only public becomes protected.

public and protected become protected.

only private becomes protected.

Your Answer:Correct

Your Answer:Incorrect

Question 13 of 30

Q-13.The break statement causes an exit

from the innermost loop only.

only from the innermost switch.

from all loops & switches.

from the innermost loop or switch.

Your Answer:Correct

Your Answer:Incorrect

Question 14 of 30

Q-14.A white space is :

blank space

new line

tab

all of the above

Your Answer:Correct

Your Answer:Incorrect

Question 15 of 30

Q-15.Overloading the function operator

requires a class with an overloaded operator.

requires a class with an overloaded [ ] operator.

allows you to create objects that act syntactically like functions

usually make use of a constructor that takes arguments.

Your Answer:Correct

Your Answer:Incorrect

Question 16 of 30

Q-16.Pure virtual functions

have to be redefined in the inherited class.

cannot have public access specification.

are mandatory for a virtual class.

None of the above.

Your Answer:Correct

Your Answer:Incorrect

Question 17 of 30

Q-17.An array element is accessed using

a FIFO approach

an index number

the operator

a member name

Your Answer:Correct

Your Answer:Incorrect

Question 18 of 30

Q-18.A virtual class is the same as

an abstract class

a class with a virtual function

a base class

none of the above.

Your Answer:Correct

Your Answer:Incorrect

Question 19 of 30

Q-19.How many constructors can a class have?

any number

Your Answer:Correct

Your Answer:Incorrect

Question 20 of 30

Q-20.Declaration of a pointer reserves memory space

for the object.

for the pointer.

both for the object and the pointer.

none of these.

Your Answer:Correct

Your Answer:Incorrect

Question 21 of 30

Q-21.Mechanism of deriving a class from another derived class is known as____

Polymorphism

Single Inheritance

Multilevel Inheritance

Message Passing

Your Answer:Correct

Your Answer:Incorrect

Question 22 of 30

Q-22.A function call mechanism that passes arguments to a function by passing a copy of the values of the arguments is __________

call by name

call by value

call by reference

call by value result

Your Answer:Correct

Your Answer:Incorrect

Question 23 of 30

Q-23.If an array is declared as int a[4] = {3, 0, 1, 2}, then values assigned to a[0] & a[4] will be ________

3, 2

0, 2

3, 0

0, 4

Your Answer:Correct

Your Answer:Incorrect

Question 24 of 30

Q-24.Name the header file to be included for the use of built in function isalnum()

string.h

process.h

ctype.h

dos.h

Your Answer:Correct

Your Answer:Incorrect

Question 25 of 30

Q-25.You can read input that consists of multiple lines of text using

the normal cout << combination.

the cin.get( ) function with one argument.

the cin.get( ) function with two arguments.

the cin.get( ) function with three arguments.

Your Answer:Correct

Your Answer:Incorrect

Question 26 of 30

Q-26.A pointer to the base class can hold address of

only base class object

only derived class object

base class object as well as derived class object

None of the above

Your Answer:Correct

Your Answer:Incorrect

Question 27 of 30

Q-27.Given a class named Book, which of the following is not a valid constructor?

Book ( ) { }

Book ( Book b) { }

Book ( Book &b) { }

Book (char* author, char* title) { }

Your Answer:Correct

Your Answer:Incorrect

Question 28 of 30

Q-28.Which of the following is false for cin?

It represents standard input.

It is an object of istream class.

It is a class of which stream is an object.

Using cin the data can be read from user’s terminal

Your Answer:Correct

Your Answer:Incorrect

Question 29 of 30

Q-29.In multiple inheritance

the base classes must have only default constructors

cannot have virtual functions

can include virtual classes

None of the above.

Your Answer:Correct

Your Answer:Incorrect

Question 30 of 30

Q-30.The major goal of inheritance in c++ is:

To facilitate the conversion of data types.

To help modular programming.

To extend the capabilities of a class.

To hide the details of base class.

Your Answer:Correct

Your Answer:Incorrect

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