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.The operator << when overloaded in a class

must be a member function

must be a non member function

can be both (A) & (B) above

cannot be overloaded

Your Answer:Correct

Your Answer:Incorrect

Question 2 of 30

Q-2.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 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.It is possible to declare as a friend

a member function

a global function

a class

all of the above

Your Answer:Correct

Your Answer:Incorrect

Question 5 of 30

Q-5.Which of the following cannot be legitimately passed to a function

A constant.

A variable.

A structure.

A header file.

Your Answer:Correct

Your Answer:Incorrect

Question 6 of 30

Q-6.To convert from a user defined class to a basic type, you would most likely use.

A built-in conversion function

A one-argument constructor

A conversion function that’s a member of the class.

An overloaded ‘=‘ operator.

Your Answer:Correct

Your Answer:Incorrect

Question 7 of 30

Q-7.An array element is accessed using

a FIFO approach

an index number

the operator

a member name

Your Answer:Correct

Your Answer:Incorrect

Question 8 of 30

Q-8.Function templates can accept

any type of parameters

only one parameter

only parameters of the basic type

only parameters of the derived type

Your Answer:Correct

Your Answer:Incorrect

Question 9 of 30

Q-9.In which case is it mandatory to provide a destructor in a class?

Almost in every class

Class for which two or more than two objects will be created

Class for which copy constructor is defined

Class whose objects will be created dynamically

Your Answer:Correct

Your Answer:Incorrect

Question 10 of 30

Q-10.Member functions, when defined within the class specification:

are always inline.

are not inline.

are inline by default, unless they are too big or too complicated.

are not inline by default.

Your Answer:Correct

Your Answer:Incorrect

Question 11 of 30

Q-11.An exception is caused by

a hardware problem

a problem in the operating system

a syntax error

a run-time error

Your Answer:Correct

Your Answer:Incorrect

Question 12 of 30

Q-12.The process of building new classes from existing one is called

Structure

Inheritance

Polymorphism

Template

Your Answer:Correct

Your Answer:Incorrect

Question 13 of 30

Q-13.If the variable count exceeds 100, a single statement that prints “Too many” is

if (count<100) cout << “Too many”;

if (count>100) cout >> “Too many”;

if (count>100) cout << “Too many”;

None of these

Your Answer:Correct

Your Answer:Incorrect

Question 14 of 30

Q-14.The keyword friend does not appear in

the class allowing access to another class.

the class desiring access to another class.

the private section of a class.

the public section of a class.

Your Answer:Correct

Your Answer:Incorrect

Question 15 of 30

Q-15.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 16 of 30

Q-16.If a class C is derived from class B, which is derived from class A, all through public inheritance, then a class C member function can access

protected and public data only in C and B.

protected and public data only in C.

private data in A and B.

protected data in A and B.

Your Answer:Correct

Your Answer:Incorrect

Question 17 of 30

Q-17.Which of the statements is true in a protected derivation of a derived class from a base class?

Private members of the base class become protected members of the derived class

Protected members of the base class become public members of the derived class

Public members of the base class become protected members of the derived class

Protected derivation does not affect private and protected members of the

Your Answer:Correct

Your Answer:Incorrect

Question 18 of 30

Q-18.If you wanted to sort many large objects or structures, it would be most efficient to

place them in an array & sort the array.

place pointers to them in an array & sort the array.

place them in a linked list and sort the linked list.

place references to them in an array and sort the array

Your Answer:Correct

Your Answer:Incorrect

Question 19 of 30

Q-19.Usually a pure virtual function

has complete function body.

will never be called.

will be called only to delete an object.

is defined only in derived class.

Your Answer:Correct

Your Answer:Incorrect

Question 20 of 30

Q-20.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 21 of 30

Q-21.A white space is :

blank space

new line

tab

all of the above

Your Answer:Correct

Your Answer:Incorrect

Question 22 of 30

Q-22.Maximum number of template arguments in a function template is

one

two

three

many

Your Answer:Correct

Your Answer:Incorrect

Question 23 of 30

Q-23.A class defined within another class is:

Nested class

Inheritance

Containership

Encapsulation

Your Answer:Correct

Your Answer:Incorrect

Question 24 of 30

Q-24.Which of the following expressions is illegal?

(10 6).

(false && true)

bool (x) = (bool)10;

float y = 12.67;

Your Answer:Correct

Your Answer:Incorrect

Question 25 of 30

Q-25.The statement f1.write((char*)&obj1, sizeof(obj1));

writes the member function of obj1 to f1.

Writes the data in obj1 to f1.

Writes the member function and the data of obj1 to f1

Writes the address of obj1 to f1.

Your Answer:Correct

Your Answer:Incorrect

Question 26 of 30

Q-26.To access the public function fbase() in the base class, a statement in a derived class function fder() uses the statement.fbase();

fbase();

fder();

base::fbase();

der::fder();

Your Answer:Correct

Your Answer:Incorrect

Question 27 of 30

Q-27.RunTime polymorphism is achieved by ___________

friend function

virtual function

operator overloading

function overloading

Your Answer:Correct

Your Answer:Incorrect

Question 28 of 30

Q-28.The new operator

returns a pointer to the variable

creates a variable called new

obtains memory for a new variable

tells how much memory is available

Your Answer:Correct

Your Answer:Incorrect

Question 29 of 30

Q-29.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 30 of 30

Q-30.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

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