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.Maximum number of template arguments in a function template is

one

two

three

many

Your Answer:Correct

Your Answer:Incorrect

Question 2 of 30

Q-2.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 3 of 30

Q-3.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 4 of 30

Q-4.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 5 of 30

Q-5.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 6 of 30

Q-6.Which of the following declarations are illegal?

void *ptr;

char *str = “hello”;

char str = “hello”;

const *int p1;

Your Answer:Correct

Your Answer:Incorrect

Question 7 of 30

Q-7.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 8 of 30

Q-8.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 9 of 30

Q-9.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?

Error. Cannot be executed

Your Answer:Correct

Your Answer:Incorrect

Question 10 of 30

Q-10.The actual source code for implementing a template function is created when

The declaration of function appears.

The function is invoked.

The definition of the function appears.

None of the above.

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 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 13 of 30

Q-13.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 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.The members of a class, by default, are

public

protected

private

mandatory to specify

Your Answer:Correct

Your Answer:Incorrect

Question 16 of 30

Q-16.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 17 of 30

Q-17.The address of a variable temp of type float is

*temp

&temp

float& temp

float temp&

Your Answer:Correct

Your Answer:Incorrect

Question 18 of 30

Q-18.To perform stream I/O with disk files in C++, you should

open and close files as in procedural languages

use classes derived from ios

use C language library functions to read and write data.

include the IOSTREAM.H header file.

Your Answer:Correct

Your Answer:Incorrect

Question 19 of 30

Q-19.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 20 of 30

Q-20.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 21 of 30

Q-21.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 22 of 30

Q-22.A friend function to a class, C cannot access

private data members and member functions.

public data members and member functions.

protected data members and member functions.

the data members of the derived class of C.

Your Answer:Correct

Your Answer:Incorrect

Question 23 of 30

Q-23.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 24 of 30

Q-24.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 25 of 30

Q-25.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 26 of 30

Q-26.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 27 of 30

Q-27.A white space is :

blank space

new line

tab

all of the above

Your Answer:Correct

Your Answer:Incorrect

Question 28 of 30

Q-28.What will be the output of following program? #include void main() { float x; x=(float)9/2; cout x; }

4.5

4.0

Your Answer:Correct

Your Answer:Incorrect

Question 29 of 30

Q-29.Which of the following is not the characteristic of constructor.

They should be declared in the public section.

They do not have return type.

They can not be inherited.

They can be virtual.

Your Answer:Correct

Your Answer:Incorrect

Question 30 of 30

Q-30.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

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