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 gives the memory address of integer variable a?

address(a);

address(a);

a;

a;

*a;

*a;

&a;

&a;

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

Virtual Function

Virtual Function

Copy constructor

Copy constructor

None of the Above

None of the Above

Namespaces

Namespaces

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

Pointer

Pointer

Arrays

Arrays

None of the Above

None of the Above

Unions

Unions

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

None of these

None of these

data members

data members

member functions

member functions

inline functions

inline functions

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

All variables use the same amount of memory

All variables use the same amount of memory

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

Variables make it possible to process almost any kind of data

Variables make it possible to process almost any kind of data

Variable values can change while a program runs

Variable values can change while a program runs

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

function variables

function variables

internal variables

internal variables

class variables

class variables

object variables

object variables

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

Variables control memory space

Variables control memory space

Variables are individual values in a database table

Variables are individual values in a database table

Variables enable programmers to work with different input devices

Variables enable programmers to work with different input devices

Variables store program data while code runs

Variables store program data while code runs

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

Subscripted variable

Subscripted variable

Real Variable

Real Variable

Pointer Variable

Pointer Variable

Index Variable

Index Variable

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

Local scope

Local scope

Function scope

Function scope

Class scope

Class scope

File scope

File scope

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

Both

Both

Global Variables

Global Variables

None of the Above

None of the Above

Local Variables

Local Variables

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

51

51

50

50

0

0

49

49

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

%

%

&

&

*

*

$

$

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

%

%

*

*

Scope operator

Scope operator

++

++

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

float variable

float variable

string variable

string variable

none of the mentioned

none of the mentioned

int variable

int variable

#15. A variable is a symbol that represents

A number

A number

A string

A string

A storage location in the computer's memory

A storage location in the computer's memory

Nothing

Nothing

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

dynamic

dynamic

static

static

automatic

automatic

automator

automator

#17. 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

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

Both are evaluated equally

Both are evaluated equally

None of them

None of them

variable

variable

expression

expression

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

Register variables

Register variables

Static variables

Static variables

Global variables

Global variables

None of the Above

None of the Above

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

storage class

storage class

scope

scope

All of these

All of these

data type

data type

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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