C++ MCQ

Soopro Pathshala provides C++ MCQ(Multiple Choice Questions)

1. Who developed c++ languange?

a) Anders Hejlsberg

b) Bjarne Stroustrup

c) Dennis Ritchie

d) James Gosling

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2. Identify the correct extension of the user-defined header file in C++.

a) .cpp

b) .hg

c) .h

d) .hf

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3. C++ uses which approach?

a) right-left

b) top-down

c) left-right

d) bottom-up

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4. Which of the following data type is supported in C++ but not in C?

a) int

b) bool

c) double

d) float

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5. Using which of the following data type can 19.54 be represented?

a) void

b) double

c) int

d) none

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6. Identify the correct function from which the execution of C++ program starts?

a) new()

b) start()

c) pow()

d) main()

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7. Identify the size of int datatype in C++.

a) 1 byte

b) 2 byte

c) 4 byte

d) depend on compiler

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8.Identify the correct syntax for declaring arrays in C++.

a) array arr[10]

b) array{10}

c) int arr[10]

d) int arr

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9. Identify the correct example for a pre-increment operator.

a) ++n

b) n++

c) --n

d) +n

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10. Which of the following loops is best when we know the number of iterations?

a) while loop

b) do while

c) for loop

d) all of above

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11. By which of the following can the if-else statement be replaced?

a) bitwise operator

b) logical operator

c) conditional operator

d) arithmetic operator

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12. Which of the following is “address of operator”?.

a) *

b) &

c) []

d) &&

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13. Identify the scope resolution operator.

a) :

b) ::

c) ?

d) none

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14. goto can be classified into?

a) label

b) variable

c) operator

d) function

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15. Identify the correct definition of ‘*’ operator in pointer.

a) address of operator

b) value of address operator

c) multiplication operator

d) all of above

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16. Choose the correct default return value of function.

a) int

b) void

c) char

d) float

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17. Choose the correct option which is mandatory in a function.

a) return_type

b) parameter

c) function_name

d) both a and c

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18. The constants in C++ are also known as?

a) pre-processor

b) literals

c) const

d) none

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19. What is the ASCII value of ‘\0’ character?

a) 32

b) 24

c) 48

d) 0

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20. Find the output of the following program.
main()
{
int a=7/0;
}

a) 0

b) compilation error

c) exception

d) none

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21. Which is more effective while calling the C++ functions?

a) call by object

b) call by pointer

c) call by value

d) call by reference

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22. Which of the following is used to terminate the function declaration in C++?

a) ;

b) ]

c) )

d) :

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23. The C++ code which causes abnormal termination/behaviour of a program should be written under _________ block.

a) catch

b) throw

c) try

d) finally

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24. What is abstract class in C++?

a) Any Class in C++ is an abstract class

b) Class from which any class is derivedn

c) Class specifically used as a base class with atleast one virtual functions

d) Class specifically used as a base class with atleast one pure virtual functions

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25. Which of the following constructors are provided by the C++ compiler if not defined in a class?

a) copy constructor

b) default constructor

c) assignment constructor

d) all of the mentioned

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26. Which concept allows you to reuse the written code in C++?

a) Inheritance

b) Polymorphism

c) Abstraction

d) Encapsulation

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27. What is the benefit of c++ input and output over c input and output?

a) both type safety & exception

b) sequence container

c) exception

d) type safety

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28. Which keyword is used to declare the friend function?

a) friend

b) firend

c) classfriend

d) myfriend

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29. What is the syntax of friend function?

a) friend class1 Class2;

b) friend class;

c) friend class

d) friend class()

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30. Where does keyword ‘friend’ should be placed?

a) function declaration

b) function definition

c) main function

d) block function

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31. What is C++?

a) C++ is an object oriented programming language

b) C++ is a procedural programming language

c) C++ supports both procedural and object oriented programming language

d) C++ is a functional programming language

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32. Which of the following is not a type of constructor in C++?

a) Default constructor

b) Parameterized constructor

c) Copy constructor

d) Friend constructor

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33. Which of the following is the correct syntax to add the header file in the C++ program?

a) #include

b) #include "userdefined.h"

c) "userdefined.h"

d) both a and b

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34. Which of the following is the address operator?

a) @

b) #

c) &

d) %

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35. Which of the following is the correct syntax to read the single character to console in the C++ language?

a) Read ch()

b) Getline vh()

c) get(ch)

d) Scanf(ch)

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36. Which one of the following represents the tab?

a) \n

b) \t

c) \r

d) none of the above

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37. Which type of memory is used by an Array in C++ programming language?

a) Contiguous

b) None-contiguous

c) Both a and b

d) Not mentioned

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38. What is the size of int in bits in C++?

a) 16

b) 32

c) 64

d) 8

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39. What is the size of long int in bits in C++?

a) 64

b) 32

c) 16

d) 8

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40. What is Class?

a) blue print architecture

b) ref type data type

c) both a and b

d) none of these

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