computer MCQs

1

A data structure is a container used to store a collection of data items in a ___.

A

random order

B

specific layout

C

scattered way

D

different file

2

An array is a data structure that can hold multiple values of the ___ data type.

A

same

B

different

C

integer

D

character

3

An important property of an array is that it stores all values at ___ locations in computer memory.

A

random

B

non-consecutive

C

consecutive

D

separate

4

In the C array declaration 'int marks[20];', what does 'int' represent?

A

Array Name

B

Array Size

C

Data Type

D

Index

5

What is the unique identifier used to refer to an array called?

A

Data Type

B

Array Name

C

Array Size

D

Index

6

The maximum number of elements an array can hold is defined by its ___.

A

Index

B

Name

C

Data Type

D

Size

7

Assigning values to an array for the first time is called ___.

A

Array Declaration

B

Array Initialization

C

Array Accessing

D

Array Repetition

8

The index of the first element in any C array is always ___?

A

1

B

-1

C

0

D

N

9

If an array is declared as 'float data[50];', what is the index of the last element?

A

50

B

49

C

1

D

0

10

To access a specific element in an array, you use the array name followed by the ___ in square brackets.

A

value

B

size

C

data type

D

index

11

What structure is used to repeat a set of statements multiple times in C?

A

Conditional

B

Array

C

Loop

D

Data

12

Which of the following is NOT a loop structure mentioned in the chapter?

A

For loop

B

While loop

C

If-else loop

D

Do-While loop

13

The general syntax of a for loop is 'for(initialization; condition; ___ )'.

A

body

B

statement

C

increment/decrement

D

break

14

Which part of the 'for' loop is executed only once, at the very beginning?

A

Condition

B

Body of the loop

C

Increment/decrement

D

Initialization

15

If the condition in a 'for' loop is initially false, the loop body will be executed ___ times.

A

at least once

B

zero

C

infinitely

D

one

16

A loop inside another loop is called a ___ loop.

A

Complex

B

Nested

C

Double

D

Sequential

17

What is each single run or execution of a loop's body called?

A

A round

B

A cycle

C

An iteration

D

A process

18

In the code 'for(int i = 0; i < 10; i++)', the loop will run for how many iterations?

A

9

B

10

C

11

D

1

19

To initialize all elements of an array in a single statement, it must be done at the time of ___?

A

declaration

B

execution

C

compilation

D

accessing

20

What will happen if you try to initialize a whole array with '{}' after it has been declared?

A

It works fine

B

It initializes only the first element

C

The compiler generates an error

D

It fills the array with zeros

21

In C, 'scanf' is a predefined function used for ___?

A

displaying output

B

mathematical calculation

C

taking input from the user

D

closing the program

22

Variables can be used as array ___ to access elements dynamically.

A

names

B

sizes

C

types

D

indexes

23

What data type would be most appropriate for an array storing the heights of students, like 5.7, 6.2?

A

int

B

char

C

string

D

float

24

The 'Code to repeat' inside a loop's curly braces is known as the ___ of the loop.

A

header

B

condition

C

body

D

footer

25

After the body of a 'for' loop executes, which part is typically executed next?

A

Initialization

B

Condition Check

C

Increment/Decrement

D

Stop

26

Nested loops are particularly useful for repeating a ___ multiple times.

A

single value

B

condition

C

pattern

D

declaration

27

To read or write values in an entire array efficiently, you should use a ___?

A

single printf statement

B

switch case

C

loop

D

goto statement

28

What is the result of 'fact = fact * i;' inside a loop designed to calculate a factorial?

A

It adds the numbers

B

It finds the average

C

It multiplies to get the factorial

D

It subtracts the numbers

29

If an array is declared as 'char vowels[5]', how many character values can it store?

A

4

B

5

C

6

D

0

30

In Programming Time 4.9, the 'flag' variable is used to determine if a number is ___?

A

even

B

odd

C

prime

D

negative

31

In the statement 'printf("%d", marks[i]);', 'i' is a ___ used as an index.

A

constant

B

keyword

C

variable

D

data type

32

An 'int' array can hold multiple ___ values.

A

real

B

character

C

string

D

integer

33

What is the purpose of the statement 'i++' in a for loop?

A

To decrease the counter

B

To initialize the counter

C

To test the counter

D

To increase the counter

34

According to the flowchart, if the loop condition is true, what happens next?

A

Initialization

B

Increment/Decrement

C

Execute Associated Code

D

Stop

35

Which of the following correctly declares and initializes an array of 3 integers?

A

int a[]; a = {1,2,3};

B

int a[3] = (1,2,3);

C

int a[3] = {1,2,3};

D

int a = {1,2,3};

36

The expression 'i % n == 0' checks if 'i' is ___ by 'n'.

A

a multiple of

B

greater than

C

less than

D

equal to

37

A loop that never terminates is called an ___ loop.

A

empty

B

nested

C

infinite

D

invalid

38

To print numbers from 1 to 10, the loop condition could be ___?

A

i > 10

B

i < 10

C

i <= 10

D

i == 10

39

Which part of the 'for' loop is checked before every iteration?

A

Initialization

B

Body

C

Increment/Decrement

D

Condition

40

In a nested loop structure, the _ loop completes all its iterations for every single iteration of the _ loop.

A

outer, inner

B

inner, outer

C

first, second

D

second, first

41

The statement 'for(int i = 1; i <= 5; i++)' will cause the loop to iterate how many times?

A

4

B

5

C

6

D

1

42

Which keyword is associated with the 'for' loop structure?

A

repeat

B

loop

C

for

D

while

43

The structure that allows repetition of a set of instructions is known as a ___ structure.

A

data

B

file

C

conditional

D

loop

44

Contiguous memory allocation means the memory blocks are ___ one another.

A

far from

B

inside

C

next to

D

opposite to

45

What is the output of 'printf("%d", array[2]);' if 'array' is '{10, 20, 30, 40}'?

A

10

B

20

C

30

D

40

46

What is the primary focus of Chapter 4: Data and Repetition?

A

Functions and Pointers

B

File Handling

C

Arrays and For Loops

D

Object-Oriented Programming

47

A 'for' loop combines initialization, condition, and increment/decrement in a ___ line.

A

single

B

double

C

multi-line

D

separate file

48

The 'break' statement is used to ___ a loop.

A

enter

B

continue

C

exit

D

repeat

49

The unique identifier for an array is its ___?

A

Type

B

Name

C

Size

D

First element

50

Using loops makes it easier to _ and _ values in arrays.

A

declare, define

B

read, write

C

delete, create

D

move, copy

A data structure is a container used to store a collection of data items in a ___.

An array is a data structure that can hold multiple values of the ___ data type.

An important property of an array is that it stores all values at ___ locations in computer memory.

In the C array declaration 'int marks[20];', what does 'int' represent?

What is the unique identifier used to refer to an array called?

The maximum number of elements an array can hold is defined by its ___.

Assigning values to an array for the first time is called ___.

The index of the first element in any C array is always ___?

If an array is declared as 'float data[50];', what is the index of the last element?

To access a specific element in an array, you use the array name followed by the ___ in square brackets.

What structure is used to repeat a set of statements multiple times in C?

Which of the following is NOT a loop structure mentioned in the chapter?

The general syntax of a for loop is 'for(initialization; condition; ___ )'.

Which part of the 'for' loop is executed only once, at the very beginning?

If the condition in a 'for' loop is initially false, the loop body will be executed ___ times.

A loop inside another loop is called a ___ loop.

What is each single run or execution of a loop's body called?

In the code 'for(int i = 0; i < 10; i++)', the loop will run for how many iterations?

To initialize all elements of an array in a single statement, it must be done at the time of ___?

What will happen if you try to initialize a whole array with '{}' after it has been declared?

In C, 'scanf' is a predefined function used for ___?

Variables can be used as array ___ to access elements dynamically.

What data type would be most appropriate for an array storing the heights of students, like 5.7, 6.2?

The 'Code to repeat' inside a loop's curly braces is known as the ___ of the loop.

After the body of a 'for' loop executes, which part is typically executed next?

Nested loops are particularly useful for repeating a ___ multiple times.

To read or write values in an entire array efficiently, you should use a ___?

What is the result of 'fact = fact * i;' inside a loop designed to calculate a factorial?

If an array is declared as 'char vowels[5]', how many character values can it store?

In Programming Time 4.9, the 'flag' variable is used to determine if a number is ___?

In the statement 'printf("%d", marks[i]);', 'i' is a ___ used as an index.

An 'int' array can hold multiple ___ values.

What is the purpose of the statement 'i++' in a for loop?

According to the flowchart, if the loop condition is true, what happens next?

Which of the following correctly declares and initializes an array of 3 integers?

The expression 'i % n == 0' checks if 'i' is ___ by 'n'.

A loop that never terminates is called an ___ loop.

To print numbers from 1 to 10, the loop condition could be ___?

Which part of the 'for' loop is checked before every iteration?

In a nested loop structure, the ___ loop completes all its iterations for every single iteration of the ___ loop.

The statement 'for(int i = 1; i <= 5; i++)' will cause the loop to iterate how many times?

Which keyword is associated with the 'for' loop structure?

The structure that allows repetition of a set of instructions is known as a ___ structure.

Contiguous memory allocation means the memory blocks are ___ one another.

What is the output of 'printf("%d", array[2]);' if 'array' is '{10, 20, 30, 40}'?

What is the primary focus of Chapter 4: Data and Repetition?

A 'for' loop combines initialization, condition, and increment/decrement in a ___ line.

The 'break' statement is used to ___ a loop.

The unique identifier for an array is its ___?

Using loops makes it easier to ___ and ___ values in arrays.

In a nested loop structure, the _ loop completes all its iterations for every single iteration of the _ loop.

Using loops makes it easier to _ and _ values in arrays.