computer MCQs - 10th class Chapter 02 Mcqs

1

Which function is used to display formatted output on the screen?

A

scanf

B

getch

C

printf

D

main

2

What is the correct format specifier for an integer data type?

A

%f

B

%c

C

%s

D

%d

3

The scanf() function is used to perform which operation?

A

Display output

B

Get input from the user

C

Hold the screen

D

Terminate the program

4

Which header file is required to use the getch() function?

A

stdio.h

B

math.h

C

conio.h

D

string.h

5

What symbol is used as a statement terminator in C language?

A

:

B

.

C

,

D

;

6

Which of the following is an escape sequence for a new line?

A

\t

B

\n

C

\b

D

\\

7

The escape sequence \t is used to insert a what?

A

New Line

B

Backspace

C

Tab

D

Single Quote

8

Which operator is used to assign a value to a variable?

A

0

B

0

C

!=

D

<=

9

Which of the the following is an arithmetic operator?

A

&&

B

||

C

0

D

%

10

The modulus operator (%) works on which type of data?

A

float

B

char

C

double

D

int

11

Which operator compares two values for equality?

A

0

B

!=

C

0

D

>=

12

What is the purpose of relational operators?

A

To perform arithmetic calculations

B

To assign values

C

To compare two values

D

To perform logical operations

13

A true value in a Boolean expression is represented by what number in C?

A

0

B

1

C

-1

D

10

14

Which of the following is a logical operator?

A

<

B

>

C

&&

D

+

15

The AND (&&) operator returns true only if...

A

one operand is true

B

both operands are true

C

both operands are false

D

one operand is false

16

The NOT (!) operator is what type of operator?

A

Binary

B

Ternary

C

Unary

D

Relational

17

Which operator has the highest precedence?

A

+

B

*

C

()

D

0

18

In an expression with multiple operators of equal precedence, which operator is evaluated first?

A

The rightmost operator

B

The leftmost operator

C

The middle operator

D

The last operator

19

What does the getch() function do with the character entered by the user?

A

Displays it on screen

B

Does not display it on screen

C

Stores it in a file

D

Ignores it

20

A single scanf() function can be used to take how many inputs?

A

Only one

B

Only two

C

Multiple inputs

D

No inputs

21

What is the escape sequence for displaying a backslash (\) character?

A

//

B

\b

C

\\

D

\s

22

What value does the expression 5 != 7 evaluate to?

A

True

B

False

C

0

D

Error

23

The OR (||) operator returns false only if...

A

one operand is true

B

both operands are true

C

both operands are false

D

one operand is false

24

What is the result of the expression 7 % 3?

A

1

B

2

C

3

D

2.33

25

If both operands of a division are integers, the result will be a(n)...

A

float

B

char

C

integer

D

double

26

What does short-circuit evaluation mean for an AND operation?

A

If the left expression is false, the whole expression is false

B

The right expression is always evaluated

C

If the left expression is true, the whole expression is false

D

Both expressions are always evaluated

27

Binary operators require how many operands?

A

One

B

Two

C

Three

D

Zero

28

What is the format specifier for the float data type?

A

%d

B

%c

C

%f

D

%i

29

To display a float value with exactly two digits after the decimal point, you would use?

A

%.nf

B

%.2f

C

%2.f

D

%f.2

30

The address of a variable in scanf() is specified using which symbol?

A

*

B

&

C

%

D

#

31

What is the purpose of the expression a++?

A

Add 2 to a

B

Multiply a by 1

C

Increase the value of a by 1

D

No change

32

Which operator is an example of a unary operator?

A

+

B

*

C

!

D

/

33

Which of the following correctly converts the algebraic expression x = 6y + z into a C expression?

A

x = 6(y) + z;

B

x = 6y + z;

C

x = 6*y + z;

D

x = (6*y) + z

34

A tab stop is a collection of how many spaces?

A

4

B

6

C

8

D

10

35

Which operator returns the remainder of a division?

A

Division (/)

B

Multiply (*)

C

Modulus (%)

D

Subtract (-)

36

What is the result of the expression !(True)?

A

True

B

False

C

1

D

Error

37

What is the format specifier for the char data type?

A

%d

B

%c

C

%f

D

%s

38

What happens if you forget the '&' sign in a scanf() function?

A

The program works as expected

B

A compiler error occurs

C

The program executes but does not behave as expected

D

The computer shuts down

39

Which of these is NOT a relational operator?

A

!=

B

>=

C

<

D

&&

40

What is the name given to the backslash (\) character in an escape sequence?

A

Forward slash

B

Escape character

C

Control character

D

Sequence starter

41

The expression a-- is equivalent to which statement?

A

a = a - 2;

B

a = a * -1;

C

a = a - 1;

D

a = 1 - a;

42

What value is represented by a 'false' relational expression?

A

1

B

-1

C

0

D

any non-zero value

43

What will printf("%d", 5 > 7); display?

A

1

B

0

C

True

D

False

44

C language performs short-circuit evaluation for which operators?

A

Arithmetic operators

B

Relational operators

C

Assignment operators

D

Logical operators

45

What is the primary role of the printf() function?

A

To read data from the keyboard

B

To show output on the screen

C

To perform mathematical calculations

D

To declare variables

46

The values inside the double quotes of a simple printf() statement are...

A

processed as variables

B

displayed on screen as they are

C

evaluated as expressions

D

ignored by the compiler

47

When does the getch() function allow the program to continue execution?

A

After pressing the Enter key

B

Immediately after the user types any key

C

After a 5-second delay

D

After the program finishes

48

Which of the following is a binary operator?

A

!

B

++

C

- (sign operator)

D

||

49

What is the purpose of the main() function in a C program?

A

It is the entry point for program execution

B

It handles all input/output operations

C

It defines all variables

D

It includes header files