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.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 2 of 30

Q-2.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 3 of 30

Q-3.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 4 of 30

Q-4.A copy constructor takes

no argument

one argument

two arguments

arbitrary no. of arguments

Your Answer:Correct

Your Answer:Incorrect

Question 5 of 30

Q-5.A library function exit() causes an exit from

the loop in which it occurs

the block in which it occurs

the function in which it occurs

the program in which it occurs

Your Answer:Correct

Your Answer:Incorrect

Question 6 of 30

Q-6.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 7 of 30

Q-7.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 8 of 30

Q-8.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 9 of 30

Q-9.In C++, dynamic memory allocation is accomplished with the operator ____

new

this

malloc( )

delete

Your Answer:Correct

Your Answer:Incorrect

Question 10 of 30

Q-10.Which of the following ways are legal to access a class data member using this pointer?

this.x

*this.x

*(this.x)

(*this).x

Your Answer:Correct

Your Answer:Incorrect

Question 11 of 30

Q-11.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 12 of 30

Q-12.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 13 of 30

Q-13.Additional information sent when an exception is thrown may be placed in

the throw keyword.

the function that caused the error.

the catch block.

an object of the exception class.

Your Answer:Correct

Your Answer:Incorrect

Question 14 of 30

Q-14.If a base class destructor is not virtual, then

It can not have a function body.

It can not be called.

It can not be called when accessed from pointer.

Destructor in derived class can not be called when accessed through a pointer to the base class.

Your Answer:Correct

Your Answer:Incorrect

Question 15 of 30

Q-15.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 16 of 30

Q-16.Which can be passed as an argument to a function?

constant

expression

another function

all of the above.

Your Answer:Correct

Your Answer:Incorrect

Question 17 of 30

Q-17.A pure virtual function is a virtual function that

has no body

returns nothing

is used in base class

both (A) and (C)

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.Exception handling is targeted at

Run-time error

Compile time error

Logical error

All of the above.

Your Answer:Correct

Your Answer:Incorrect

Question 20 of 30

Q-20.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 21 of 30

Q-21.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 22 of 30

Q-22.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 23 of 30

Q-23.for (; ?

means the test which is done using some expression is always true

is not valid

will loop forever

should be written as for( )

Your Answer:Correct

Your Answer:Incorrect

Question 24 of 30

Q-24.What will be the output of the following program? #include iostream.h void main() { float x=5,y=2; int result; result=x % y; cout result; }

1.0

Error message

2.5

Your Answer:Correct

Your Answer:Incorrect

Question 25 of 30

Q-25.A property which is not true for classes is that they

are removed from memory when not in use.

permit data to be hidden from other classes

bring together all aspects of an entity in one place.

Can closely model objects in the real world.

Your Answer:Correct

Your Answer:Incorrect

Question 26 of 30

Q-26.A white space is :

blank space

new line

tab

all of the above

Your Answer:Correct

Your Answer:Incorrect

Question 27 of 30

Q-27.An exception is caused by

a runtime error.

a syntax error.

a problem in the operating system.

a hardware problem.

Your Answer:Correct

Your Answer:Incorrect

Question 28 of 30

Q-28.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 29 of 30

Q-29.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 30 of 30

Q-30.Which of the following statements is NOT valid about operator overloading?

Only existing operators can be overloaded.

Overloaded operator must have at least one operand of its class type.

The overloaded operators follow the syntax rules of the original operator.

none of the above.

Your Answer:Correct

Your Answer:Incorrect

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