C Fundamentals MCQs

Question 1

What is the primary purpose of a function prototype in C?

Accepted Answer

Declare a function

Answer

Declare a variable

Answer

Define a function

Answer

Assign a value

Question 2

Which character is used to indicate the end of a statement in C?

Accepted Answer

;

Answer

.

Answer

:

Answer

,

Question 3

Which data type is used to represent a single character in C?

Accepted Answer

char

Answer

int

Answer

float

Answer

double

Question 4

What is the correct syntax for declaring a variable in C?

Accepted Answer

int variable_name;

Answer

variable_name = 5;

Answer

variable_name int;

Answer

int = variable_name;

Question 5

Which symbol is used for the 'modulo' operation in C?

Accepted Answer

%

Answer

/

Answer

*

Answer

^

Question 6

What is the default return type of a function in C if not specified?

Accepted Answer

int

Answer

void

Answer

char

Answer

float

Question 7

Which operator is used for 'logical AND' in C?

Accepted Answer

&&

Answer

||

Answer

&

Answer

|

Question 8

What is the purpose of the 'sizeof' operator in C?

Accepted Answer

Determine size

Answer

Calculate square root

Answer

Perform division

Answer

Convert to string

Question 9

In C, which type of variable should be used to store decimal numbers?

Accepted Answer

float

Answer

char

Answer

int

Answer

double