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 ___ reveals the hidden scope of a variable.

%

++

Scope operator

*

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

string variable

float variable

int variable

none of the mentioned

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

X!=Y

X=Y

X is Y

X==Y

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

$

*

%

&

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

Local Variables

None of the Above

Both

Global Variables

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

data type

storage class

scope

All of these

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

&a;

address(a);

*a;

a;

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

None of the Above

Virtual Function

Copy constructor

Namespaces

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

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 make it possible to process almost any kind of data

All variables use the same amount of memory

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

Function scope

Local scope

Class scope

File scope

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

internal variables

class variables

function variables

object variables

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

Pointer Variable

Subscripted variable

Index Variable

Real Variable

#13. A variable is a symbol that represents

A string

A storage location in the computer's memory

Nothing

A number

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

Both are evaluated equally

variable

expression

None of them

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

inline functions

member functions

None of these

data members

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

automator

static

automatic

dynamic

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

Register variables

Static variables

Global variables

None of the Above

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

Unions

Pointer

Arrays

None of the Above

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

51

49

50

0

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

Variables control memory space

Variables enable programmers to work with different input devices

Variables store program data while code runs

Variables are individual values in a database table

Previous

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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