C++ MCQ : C++ Data Types (MULTIPLE CHOICE QUESTIONS)

In the last set of MCQs, we were introduced to C++ Keywords. There, we have discussed some questions. This set of multiple choice questions focuses on the C++ Data Types.

Firstly, read all the questions and after that select the appropriate option. Moreover, each question contains four options, out of them only one option will be correct. If you fail to select the correct option, don’t worry, you can try again at the end (by refreshing the page). You can use Previous and Next button to switch to a different set of questions.

These questions focuses on different Data Types of C++ like Booleans, Character Types, Integer Types, Floating Point Types, Sizes of data types, Void type, Enumerations. So, first try to learn about data types and then attempt these question to check how much you have learned.

C++ MCQ | DATA TYPES

TEST INSTRUCTIONS: Click on options to see the answer.

In this quiz, there are total 58 questions. So, make sure to switch to the next page by clicking on next button at the end of every 10 questions. After completion of all 58 questions, click on Finish button.

Now, start attempting the quiz.

#1. Pick the odd one out

character type

boolean type

integer type

array type

#2. Which datatype is used to represent the absence of parameters?

float

void

short

int

#3. Which type is best suited to represent the logical values?

character

all of the mentioned

integer

boolean

#4. Identify the user-defined types from the following?

enumeration

int

both enumeration and classes

classes

#5. The value 146.37 can represented using which data type?

void

double

bool

int

#6. Which of the following data types CANNOT store the number 47,255?

double

String

char

int

#7. Which data type holds the integers or real numbers with 8 bytes of memory allocated?

String

int

double

bool

#8. Which data type holds the alphanumerics using character encoding? (size varies)

bool

decimal

int

String

#9. Which holds whole numbers? (4 bytes)

int

String

double

bool

#10. Which of the following belongs to the set of character types?

wchar_t

both wchar_t and char

char

None of these

#11. In C++, what is the sign of character data type by default?

Implementation dependent

None of the mentioned

Unsigned

Signed

#12. What is size of void in bytes?

#13. Which is not an integer data type?

Integer

Short

Byte

Single

#14. ___ refers to the process of changing the data type of the value stored in a variable.

Type cast

Type int

Type char

Type float

#15. ___ data types are structure, union, class and enumeration.

Derived

Built-in

User defined

Integer

#16. What is the size of wchar_t in C++?

2 or 4

Based on the number of bits in the system

#17. Which of the following statements are true?
int f(float)

f is a function taking an argument of type float and returning an integer

f is a function of type float

f is a function taking an argument of type int and returning a floating point number

f is a function of type int

#18. When a language has the capability to produce new data type mean, it can be called as

extensible

overloaded

reprehensible

encapsulated

#19. Pick the odd one out.

integer, enum, void

arrays, pointer, classes

enumeration, classes

integer, character, boolean, floating

#20. Is bool a fundamental data type in C++?

No, it is an enum of {false, true}

No, it is a typedef of unsigned char

No, it is expanded from macros

Yes

#21. Find the odd one out.

std::vector<long>

std::vector<short>

std::vector<bool>

std::vector<int>

#22. What happens when a null pointer is converted into bool?

bool value evaluates to true

the statement is ignored

an error is flagged

bool value evaluates to false

#23. Which of the following statements are false?

bool can have two values and can be used to express logical expressions

a bool value can be used in arithmetic expressions

bool cannot be used as the type of the result of the function

bool can be converted into integers implicitly

#24. For what values of the expression is an if-statement block not executed?

0 and -1

0, all negative values, all positive values except 1

0 and all negative values

#25. Which of the two operators ++ and — work for the bool data type in C++?

None

—

++ & —

#26. Evaluate the following.
(false && true) || false || true

false

None

#27. How many characters are specified in the ASCII scheme?

128

256

#28. Given the variables p, q are of char type and r, s, t are of int type. Select the right statement?
1. t = (r * s) / (r + s);
2. t = (p * q) / (r + s);

1 is true but 2 is false

1 is false and 2 is true

both 1 and 2 are false

both 1 and 2 are true

#29. How do we represent a wide character of the form wchar_t?

L’a’

l’a’

L[a]

#30. Is the size of character literals different in C and C++?

No, they are not different

Yes, they are different

Can’t say

Implementation defined

#31. Suppose in a hypothetical machine, the size of char is 32 bits. What would sizeof(char) return?

Machine dependent

Implementation dependent

#32. The size_t integer type in C++ is?

Signed integer of at least 16 bits

Signed integer of at least 64 bits

Unsigned integer of at least 64 bits

Unsigned integer of at least 16 bits

#33. Which of these expressions will return true if the input integer v is a power of two?

(~v & (v – 1)) == 0;

(v | (v + 1)) == 0;

(v & (v – 1)) == 0;

(v | (v – 1)) == 0;

#34. What is the value of the following 8-bit integer after all statements are executed?
int x = 1;
x = x << 7;
x = x >> 7;

Implementation defined

127

-1

#35. Which of these expressions will make the rightmost set bit zero in an input integer x?

x = x | (x-1)

x = x & (x+2)

x = x | (x+1)

x = x & (x-1)

#36. Which of these expressions will isolate the rightmost set bit?

x = x ^ (-x)

x = x & (~x)

x = x & (-x)

x = x ^ (~x)

#37. 0946, 786427373824, ‘x’ and 0X2f are ___ _ and ___ literals respectively.

octal, hexadecimal, character, decimal

hexadecimal, octal, decimal, character

decimal, character, octal, hexadecimal

octal, decimal, character, hexadecimal

#38. Which of the following is not one of the sizes of the floating point types?

long double

double

float

short float

#39. Which of the following is a valid floating-point literal?

f287.333

F287.333

287.3.e2

287.e2

#40. What is the range of the floating point numbers?

-3.4E+38 to +3.4E+36

-3.4E+38 to +3.4E+34

-3.4E+38 to +3.4E+38

-3.4E+38 to +3.4E+32

#41. Which of three sizes of floating point types should be used when extended precision is required?

float

double

long double

extended float

#42. Which is used to indicate single precision value?

Either F or for L or l

L or l

F or f

Neither F or for L or l

#43. Which is correct with respect to the size of the data types?

char < int < float

int < char < float

char < int < double

char > int < float

#44. The size of an object or a type can be determined using which operator?

calloc

malloc

sizeof

malloc

#45. It is guaranteed that a has at least 8 bits and a has at least 16 bits.

int, float

bool, char

char, short

char, int

#46. Size of C++ objects are expressed in terms of multiples of the size of a and the size of a char is ___

char, 1

float, 8

int, 1

char, 4

#47. Identify the incorrect option.

sizeof(float) <= sizeof(double) <= sizeof(long double)

sizeof(N) = sizeof(signed N) = sizeof(unsigned N)

sizeof(char) <= sizeof(long) <=sizeof(wchar_t)

1 <= sizeof(bool) <= sizeof(long)

#48. Which of the following will not return a value?

null

free

void

empty

#49. _______ have the return type void.

constructors

none of these

destructors

all functions

#50. What does the following statement mean?
void a;

flags an error

declares a variable with value a

variable a is of type void

a is an object of type void

#51. Choose the incorrect option.

void is used as the base type for pointers to objects of unknown type

void is used when the function does not return a value

void is a special fundamental type

void is also used when the value of a pointer is null

#52. Identify the incorrect option.

enumerators are same as macros

enumerators are constants

enumerator values start from 0 by default

enumerators are user-defined types

#53. In which type do the enumerators are stored by the compiler?

float

string & float

string

integer

#54. To which of these enumerators can be assigned?

integer

enumerator

all of the mentioned

negative

#55. What will happen when defining the enumerated type?

it will not allocate memory

it will not allocate memory to its variables

it will allocate memory

allocate memory to objects

#56. Which variable does equals in size with enum variable?

float variable

float & string variable

string variable

int variable

#57. Which is the correct syntax for defining an enumeration data type?

None of these

{enumeratorlist} = emum

enum typename {enumeratorlist};

emum= typename

#58. Identify the type of variables.
typedef char* CHAR;
CHAR p,q;

CHAR

char

char*

unknown

Finish

Results

<< Prev- C++ MCQs : C++ Keywords

>> Next- C++ MCQ : C++ Constants

Are you curious to learn more about C++ Programming? If yes, then don’t forget to explore all the topics of C++ programming. Here, is the complete set of Multiple Choice Questions and Answers. These question sets are very helpful in preparing for Competitive Exams and University level exams.

For frontend projects, check and implements these beginner’s friendly projects :- TOP 7 PROJECTS FOR BEGINNERS TO PRACTICE HTML & CSS SKILLS

Want backlinks to your website? If yes, then follow this article and get to know in very easy way. How You Can Create High Quality Backlinks In 2021?

Learn about 404 ERROR page – EVERYTHING YOU NEED TO KNOW ABOUT 404 ERROR PAGE FOR SEO

Do practice of HTML questions :- Multiple choice questions on HTML

Do practice of C programming :- Multiple choice questions on C programming

All the answers in this set are correct. But in case, you find any typographical, grammatical or any other error in our site then kindly inform us. Don’t forget to provide the appropriate URL along with error description. So that we can easily correct it.

Thanks in advance.

For discussion about any question, join the below comment section. And get the solution of your query. Also, try to share your thoughts about the topics covered in this particular quiz.

#1. Pick the odd one out

#2. Which datatype is used to represent the absence of parameters?

#3. Which type is best suited to represent the logical values?

#4. Identify the user-defined types from the following?

#5. The value 146.37 can represented using which data type?

#6. Which of the following data types CANNOT store the number 47,255?

#7. Which data type holds the integers or real numbers with 8 bytes of memory allocated?

#8. Which data type holds the alphanumerics using character encoding? (size varies)

#9. Which holds whole numbers? (4 bytes)

#10. Which of the following belongs to the set of character types?

#11. In C++, what is the sign of character data type by default?

#12. What is size of void in bytes?

#13. Which is not an integer data type?

#14. ___ refers to the process of changing the data type of the value stored in a variable.

#15. ___ data types are structure, union, class and enumeration.

#16. What is the size of wchar_t in C++?

#17. Which of the following statements are true? int f(float)

#18. When a language has the capability to produce new data type mean, it can be called as

#19. Pick the odd one out.

#20. Is bool a fundamental data type in C++?

#21. Find the odd one out.

#22. What happens when a null pointer is converted into bool?

#23. Which of the following statements are false?

#24. For what values of the expression is an if-statement block not executed?

#25. Which of the two operators ++ and — work for the bool data type in C++?

#26. Evaluate the following. (false && true) || false || true

#27. How many characters are specified in the ASCII scheme?

#28. Given the variables p, q are of char type and r, s, t are of int type. Select the right statement?1. t = (r * s) / (r + s); 2. t = (p * q) / (r + s);

#29. How do we represent a wide character of the form wchar_t?

#30. Is the size of character literals different in C and C++?

#31. Suppose in a hypothetical machine, the size of char is 32 bits. What would sizeof(char) return?

#32. The size_t integer type in C++ is?

#33. Which of these expressions will return true if the input integer v is a power of two?

#34. What is the value of the following 8-bit integer after all statements are executed?int x = 1; x = x << 7; x = x >> 7;

#35. Which of these expressions will make the rightmost set bit zero in an input integer x?

#36. Which of these expressions will isolate the rightmost set bit?

#37. 0946, 786427373824, ‘x’ and 0X2f are _____ _____ ____ and _____ literals respectively.

#38. Which of the following is not one of the sizes of the floating point types?

#39. Which of the following is a valid floating-point literal?

#40. What is the range of the floating point numbers?

#41. Which of three sizes of floating point types should be used when extended precision is required?

#42. Which is used to indicate single precision value?

#43. Which is correct with respect to the size of the data types?

#44. The size of an object or a type can be determined using which operator?

#45. It is guaranteed that a ____ has at least 8 bits and a ____ has at least 16 bits.

#46. Size of C++ objects are expressed in terms of multiples of the size of a ____ and the size of a char is _______

#47. Identify the incorrect option.

#48. Which of the following will not return a value?

#49. _______ have the return type void.

#50. What does the following statement mean?void a;

#51. Choose the incorrect option.

#52. Identify the incorrect option.

#53. In which type do the enumerators are stored by the compiler?

#54. To which of these enumerators can be assigned?

#55. What will happen when defining the enumerated type?

#56. Which variable does equals in size with enum variable?

#57. Which is the correct syntax for defining an enumeration data type?

#58. Identify the type of variables.typedef char* CHAR; CHAR p,q;

Results

Related Posts

1 thought on “C++ MCQ : C++ Data Types (MULTIPLE CHOICE QUESTIONS)”

Leave a Comment Cancel Reply

#17. Which of the following statements are true?
int f(float)

#26. Evaluate the following.
(false && true) || false || true

#28. Given the variables p, q are of char type and r, s, t are of int type. Select the right statement?
1. t = (r * s) / (r + s);
2. t = (p * q) / (r + s);

#34. What is the value of the following 8-bit integer after all statements are executed?
int x = 1;
x = x << 7;
x = x >> 7;

#37. 0946, 786427373824, ‘x’ and 0X2f are ___ _ and ___ literals respectively.

#45. It is guaranteed that a has at least 8 bits and a has at least 16 bits.

#46. Size of C++ objects are expressed in terms of multiples of the size of a and the size of a char is ___

#50. What does the following statement mean?
void a;

#58. Identify the type of variables.
typedef char* CHAR;
CHAR p,q;