C++ MCQ : C++ Variables (MULTIPLE CHOICE QUESTIONS)

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

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.

C++ MCQ | VARIABLES

TEST INSTRUCTIONS: Click on options to see the answer.

Now, start attempting the quiz.

#1. Which of the following notation compares two variables X and Y?

X==Y

X==Y

X!=Y

X!=Y

X is Y

X is Y

X=Y

X=Y

#2. The variable that contains address of another variable is called as

None of the Above

None of the Above

Pointer

Pointer

Unions

Unions

Arrays

Arrays

#3. The other name for external variables in C++ is

None of the Above

None of the Above

Static variables

Static variables

Register variables

Register variables

Global variables

Global variables

#4. The variables declared inside the class are known as ____.

member functions

member functions

inline functions

inline functions

None of these

None of these

data members

data members

#5. Which of the following can be used to initialize a newly declared variable from an existing variable?

None of the Above

None of the Above

Namespaces

Namespaces

Virtual Function

Virtual Function

Copy constructor

Copy constructor

#6. The ___ reveals the hidden scope of a variable.

%

%

Scope operator

Scope operator

++

++

*

*

#7. The variables that can be used only within the function in which it is declared is called as

Global Variables

Global Variables

Both

Both

None of the Above

None of the Above

Local Variables

Local Variables

#8. Static variables are associated with the class itself rather than with any class object, they are also known as ___.

internal variables

internal variables

function variables

function variables

object variables

object variables

class variables

class variables

#9. Which one of the following is correct regarding variable?

Variables store program data while code runs

Variables store program data while code runs

Variables are individual values in a database table

Variables are individual values in a database table

Variables control memory space

Variables control memory space

Variables enable programmers to work with different input devices

Variables enable programmers to work with different input devices

#10. variable= expression; Which one is evaluated first?

variable

variable

None of them

None of them

Both are evaluated equally

Both are evaluated equally

expression

expression

#11. The operator that denotes address of a variable in C++ program is

%

%

&

&

*

*

$

$

#12. What is the value of variable z when the following program segment ends?
int z;
for(z=0; z<50; z++) {}

50

50

0

0

51

51

49

49

#13. Because the lifetime of a local variable is limited and determined automatically, these variables are also called ___.

automator

automator

static

static

automatic

automatic

dynamic

dynamic

#14. The variables that are used to represent individual array element in an array is called as

Real Variable

Real Variable

Subscripted variable

Subscripted variable

Index Variable

Index Variable

Pointer Variable

Pointer Variable

#15. In ___ a local variable is defined within a block.

Function scope

Function scope

File scope

File scope

Local scope

Local scope

Class scope

Class scope

#16. At what time a variable comes into existence in memory, is determined by its __________.

data type

data type

All of these

All of these

storage class

storage class

scope

scope

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

none of the mentioned

none of the mentioned

float variable

float variable

string variable

string variable

int variable

int variable

#18. Which of the following is false regarding variable?

Variables make it possible to process almost any kind of data

Variables make it possible to process almost any kind of data

All variables use the same amount of memory

All variables use the same amount of memory

Variable values can change while a program runs

Variable values can change while a program runs

Variables must be stored in a database or file if they are to be retained when the program ends

Variables must be stored in a database or file if they are to be retained when the program ends

#19. A variable is a symbol that represents

A storage location in the computer's memory

A storage location in the computer's memory

A number

A number

Nothing

Nothing

A string

A string

#20. Which of the following gives the memory address of integer variable a?

address(a);

address(a);

*a;

*a;

&a;

&a;

a;

a;

Finish

Results

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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.

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