C Programming MCQs With Answer

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C Programming Online Quiz

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• Test Name: C Programming MCQ Quiz Practice
• Type: Quiz Test
• Total Questions: 40
• Total Marks: 40
• Time: 40 minutes

Note: Answer of the questions will change randomly each time you start the test. Practice each quiz test at least 3 times if you want to secure High Marks. Once you are finished, click the View Results button. If any answer looks wrong to you in Quizzes. simply click on question and comment below that question. so that we can update the answer in the quiz section.

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C Programming Quiz

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1 / 40

________ is used to check if a condition is true or false in C.

switch-case

if-else

if

2 / 40

What is the purpose of the continue statement in C?

Print a message

Skip the current iteration

Exit the loop

3 / 40

What does the scanf() function do in C?

Read input from the user

Execute a function

Print output

4 / 40

Which function is used to convert a string to an integer in C?

itoa()

strtof()

atoi()

5 / 40

________ is the operator used to access the value stored at a memory address in C.

&

->

*

6 / 40

________ is used to compare two values in C.

=

<>

==

7 / 40

Which of the following is not a valid escape sequence in C?

v

t

a

8 / 40

Which of the following is a valid identifier in C?

_myVar

break

1abc

9 / 40

What is the purpose of the void keyword in C?

Indicates a function call

Indicates no return value

Represents a variable

10 / 40

How do you declare a function in C that takes no arguments and returns an integer?

int functionName(void) {...}

int functionName() {...}

functionName(int) {...}

11 / 40

________ is used to define a multi-line comment in C.

** ... **

//

/* ... */

12 / 40

________ is used to specify the size of an array in C.

{}

[]

()

13 / 40

Which function is used to allocate memory dynamically in C?

calloc()

realloc()

malloc()

14 / 40

Which function is used to format output in C?

printf()

scanf()

format()

15 / 40

Which header file is needed to use functions like printf() and scanf() in C?

string.h

math.h

stdio.h

16 / 40

Which of the following is not a valid data type in C?

float-point

double

char

17 / 40

Which operator is used to access structure members in C?

.

->

::

18 / 40

What is the correct way to initialize an array in C?

int arr[] = {1, 2, 3, 4, 5};

array arr = [1, 2, 3, 4, 5];

int arr[5] = {1, 2, 3, 4, 5};

19 / 40

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

variable num;

num = int;

int num;

20 / 40

________ is used to increment a variable by 1 in C.

++

--

1

21 / 40

What is the purpose of the typedef keyword in C?

Define custom data types

Import libraries

Declare variables

22 / 40

What is the purpose of the enum keyword in C?

Declare structure members

Define a set of named constants

Define array constants

23 / 40

What does the strcpy() function do in C?

Copy a string

Convert a string

Compare two strings

24 / 40

Which of the following is not a valid arithmetic operator in C?

*

+

**

25 / 40

In C, how do you declare a constant?

constant keyword

const keyword

var keyword

26 / 40

What is the correct syntax for a for loop in C?

loop (i = 0; i < 10; i++) {...}

for (i = 0; i < 10; i++) {...}

for (i = 0; i <= 10) {...}

27 / 40

What is the output of printf("%d", sizeof(int)); in C?

Size of int in bytes

Size of int in characters

Size of int in bits

28 / 40

What is the purpose of the do-while loop in C?

Loop with a condition

Execute a block of statements repeatedly

Iterate over a list

29 / 40

What is the correct syntax for a switch-case statement in C?

switch variable { case 1: ... }

switch (variable) { case 1: ... }

switch-case (variable) { 1: ... }

30 / 40

Which of the following is not a valid control structure in C?

repeat-until

if-else

switch-case

31 / 40

What does the fclose() function do in C?

Read a file

Open a file

Close a file

32 / 40

________ is used to access the address of a variable in C.

*

%

&

33 / 40

How do you declare a pointer in C?

*ptr = int;

pointer int;

int *ptr;

34 / 40

________ is used to terminate a statement in C.

:

;

,

35 / 40

What does the break statement do in a loop in C?

Exit the loop

Execute the next iteration

Skip the current iteration

36 / 40

What does the sizeof() operator return in C?

Size in characters of a variable

Size in bytes of a variable

Size in bits of a variable

37 / 40

What is the output of printf("%f", 3/2); in C?

1.5

1

1

38 / 40

What is the purpose of #include directive in C?

Include a header file

Define a macro

Print a message

39 / 40

What is the output of printf("%c", 'A' + 1); in C?

B

A

66

40 / 40

What does the rand() function do in C?

Round a number

Generate a random number

Compute factorial

0%

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