C++ Questions - Free Practice Test

Q1. What is the difference between a structure and a class in C++?

A structure can only have primitive data types as members, while a class can have any data type as members.

A class can have member functions, while a structure cannot.

A structure can only have public members, while a class can have private members.

There is no difference, they are the same thing.

Q2. Choose the correct size of void in C++

8 bytes

6 bytes

0

4 bytes

Q3. Which of these is a suitable definition of vTable?

It has VPTR

It gives the address of an element

All of the above

It is the address of Virtual Function

Q4. Which of the following is not a storage class in C++?

auto

static

register

constant

Q5. Which of the following is not a bitwise operator in C++?

<<

|

&

++

Q6. Which of the following is not a valid way to declare an array in C++?

int arr[5];

int *arr = new int[5];

int arr[] = {1, 2, 3};

int arr = {1, 2, 3};

Q7. Can you stop name mangling?

Yes, convert C++ code to C

Yes, use extern "C"

Yes

No

Q8. Which of the following is a valid C++ identifier?

variable-1

variable_1

variable1

1variable

Q9. Which of the following is the correct way to define a function in C++?

int function add(int a, int b) {}

int add(int a, int b) function {}

function int add(int a, int b) {}

int add(int a, int b) {}

Q10. What is C++?

A scripting language

A high-level programming language

A markup language

A low-level programming language

Q11. Which of the following is not a standard C++ library?

stdio.h

iostream

math.h

string.h

Q12. What is the output of the following C++ code? int x = 10; int y = x--; cout << y << " " << x;

9 9

9 10

10 10

10 9

Q13. Which of these STLs can be used to remove/insert data from anywhere?

List

Vector

Stack

Deque

Q14. What is the output of the following C++ code? | int x = 5; cout << ++x; |

Error

4

6

5

Q15. Which of the following is not a looping statement in C++?

if-else

do-while

while

for

Q16. Choose the size of empty class?

4

1

2

3

Q17. What is the output of the following C++ code? int arr[5] = {1, 2, 3, 4, 5}; cout << arr[2];

4

2

3

1

Q18. What is the other name of C++ 17?

C++ 0x

C++ 98

C++ 11

C++ 1z

Q19. Which of the following is not a data type in C++?

string

bool

char

int

Q20. Which of the following operators is used for dynamic memory allocation in C++?

delete

malloc

new

free

Q21. Is it possible to typecast void *into int*?

Definitely no

Depends on the software

Undefined command

Definitely yes

Q22. Is any function capable of calling itself?

Runtime error

Yes

Runtime error

No

Q23. What is the correct syntax for declaring a constant variable in C++?

const x = 10;

const int x;

int const x = 10;

const int x = 10;

Q24. Which of these is appropriate to access and edit data in data file handling?

Without Read

Write

Read

Both a and b

Q25. Count the number of access specifiers in C++

4

1

3

2

Your Score

- of - questions are answered correctly

Programming Through C++

For Support

Office Hours

We are on

Company

Customer Service

Help

C++

Your Score

- of - questions are answered correctly

Login to view answer sheet

FORGOT PASSWORD

SIGN UP

Email Verification