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

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Question 1 of 30

Q-1.Within a switch statement

Continue can be used but Break cannot be used

Continue cannot be used but Break can be used

Both Continue and Break can be used

Neither Continue nor Break can be used

Your Answer:Correct

Your Answer:Incorrect

Question 2 of 30

Q-2.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 3 of 30

Q-3.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 4 of 30

Q-4.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 5 of 30

Q-5.Which of the following statement is valid?

We can create new C++ operators.

We can change the precedence of the C++ operators.

We can change the associativity of the C++ operators.

We can not change operator templates.

Your Answer:Correct

Your Answer:Incorrect

Question 6 of 30

Q-6.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 7 of 30

Q-7.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 8 of 30

Q-8.What is the error in the following code? class t { virtual void print(); }

No error.

Function print() should be declared as static.

Function print() should be defined.

Class t should contain data members.

Your Answer:Correct

Your Answer:Incorrect

Question 9 of 30

Q-9.The process of building new classes from existing one is called

Structure

Inheritance

Polymorphism

Template

Your Answer:Correct

Your Answer:Incorrect

Question 10 of 30

Q-10.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 11 of 30

Q-11.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 12 of 30

Q-12.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 13 of 30

Q-13.The following can be declared as friend in a class

an object

a class

a public data member

a private data member

Your Answer:Correct

Your Answer:Incorrect

Question 14 of 30

Q-14.If x = y,5 = 2 then x ∧ y equals________. (where ∧ is a bitwise XOR operator)

00000111

10000010

10100000

11001000

Your Answer:Correct

Your Answer:Incorrect

Question 15 of 30

Q-15.A white space is :

blank space

new line

tab

all of the above

Your Answer:Correct

Your Answer:Incorrect

Question 16 of 30

Q-16.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 17 of 30

Q-17.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 18 of 30

Q-18.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 19 of 30

Q-19.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 20 of 30

Q-20.Use of virtual functions implies

overloading

overriding

static binding

dynamic binding

Your Answer:Correct

Your Answer:Incorrect

Question 21 of 30

Q-21.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 22 of 30

Q-22.Which of the following is the valid class declaration header for the derived class d with base classes b1 and b2?

class d : public b1, public b2

class d : class b1, class b2

class d : public b1, b2

class d : b1, b2

Your Answer:Correct

Your Answer:Incorrect

Question 23 of 30

Q-23.We can output text to an object of class ostream using the insertion operator << because

the ostream class is a stream

the insertion operator works with all classes.

we are actually outputting to cout.

the insertion operator is overloaded in ostream

Your Answer:Correct

Your Answer:Incorrect

Question 24 of 30

Q-24.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 25 of 30

Q-25.The members of a class, by default, are

public

protected

private

mandatory to specify

Your Answer:Correct

Your Answer:Incorrect

Question 26 of 30

Q-26.What would be the output of the following? #include void main() { char *ptr=“abcd” char ch; ch = ++*ptr++; cout ch; }

Your Answer:Correct

Your Answer:Incorrect

Question 27 of 30

Q-27.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 28 of 30

Q-28.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 29 of 30

Q-29.Overloading a postfix increment operator by means of a member function takes

no argument

one argument

two arguments

three arguments

Your Answer:Correct

Your Answer:Incorrect

Question 30 of 30

Q-30.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

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