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

Subscripted variable

Subscripted variable

Pointer Variable

Pointer Variable

Real Variable

Real Variable

Index Variable

Index Variable

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

Register variables

Register variables

Global variables

Global variables

None of the Above

None of the Above

Static variables

Static variables

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

&

&

%

%

*

*

$

$

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

++

++

*

*

Scope operator

Scope operator

%

%

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

*a;

*a;

a;

a;

address(a);

address(a);

&a;

&a;

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

X is Y

X is Y

X=Y

X=Y

X!=Y

X!=Y

X==Y

X==Y

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

Pointer

Pointer

Arrays

Arrays

Unions

Unions

None of the Above

None of the Above

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

object variables

object variables

function variables

function variables

class variables

class variables

internal variables

internal variables

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

int variable

int variable

float variable

float variable

string variable

string variable

none of the mentioned

none of the mentioned

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

automatic

automatic

static

static

dynamic

dynamic

automator

automator

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

Both are evaluated equally

Both are evaluated equally

variable

variable

expression

expression

None of them

None of them

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

inline functions

inline functions

member functions

member functions

data members

data members

None of these

None of these

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

File scope

File scope

Local scope

Local scope

Class scope

Class scope

Function scope

Function scope

#14. A variable is a symbol that represents

A storage location in the computer's memory

A storage location in the computer's memory

A string

A string

Nothing

Nothing

A number

A number

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

Copy constructor

Copy constructor

Namespaces

Namespaces

None of the Above

None of the Above

Virtual Function

Virtual Function

#16. 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

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

49

49

0

0

51

51

50

50

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

All of these

All of these

scope

scope

storage class

storage class

data type

data type

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

Variables store program data while code runs

Variables store program data while code runs

Variables enable programmers to work with different input devices

Variables enable programmers to work with different input devices

Variables control memory space

Variables control memory space

Variables are individual values in a database table

Variables are individual values in a database table

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

None of the Above

None of the Above

Local Variables

Local Variables

Global Variables

Global Variables

Both

Both

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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