C Language Quizs

By digitalcollegelibrary.com / 6 March 2024

In this C Language Quiz section - every Question Carry 2 Marks. If any question is wrong then two marks will be deducted.

Note : Fill the Information Correctly to get Certified.

C Language Quizs

1 / 50

What does "printf" stand for in C language?

Print Format

Print Function

Print Formatter

Print File

2 / 50

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

float

real

double

int

3 / 50

What is the size of the "int" data type in C on a 32-bit system?

4 bytes

2 bytes

8 bytes

1 byte

4 / 50

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

int ptr;

ptr int;

int *ptr;

pointer int;

5 / 50

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

Returns the address of a variable

Returns the type of a variable

Returns the size of a variable

Returns the value of a variable

6 / 50

Which operator is used to access the value pointed to by a pointer in C?

7 / 50

In C, what is the function of the "break" statement?

Terminates the program

Skips the current iteration of a loop

Jumps to a specific label

Exits the current loop or switch statement

8 / 50

What is the purpose of the "continue" statement in C?

Skips the rest of the code in the current block

Skips the current iteration of a loop

Exits the loop immediately

Jumps to a specific label

9 / 50

Which header file is required for using dynamic memory allocation functions in C?

stdio.h

memory.h

malloc.h

alloc.h

10 / 50

What is the purpose of the "strcpy" function in C?

Compares two strings

Concatenates two strings

Copies one string to another

Returns the length of a string

11 / 50

Which of the following is a bitwise AND operator in C?

12 / 50

What is the output of the following code snippet?

13 / 50

Which function is used to close a file in C?

close()

fclose()

file_close()

endfile()

14 / 50

What is the purpose of the "typedef" keyword in C?

Defines a new data type

Declares a variable

Specifies the return type of a function

Allocates memory for a variable

15 / 50

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

void

int

float

char

16 / 50

Which of the following is a valid way to comment multiple lines in C?

/* comment */

// comment //

# comment #

-- comment --

17 / 50

In C, what is the purpose of the "strcmp" function?

Compares two strings

Concatenates two strings

Copies one string to another

Returns the length of a string

18 / 50

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

Executes a block of code if a condition is true

Executes a block of code as long as a condition is true

Executes a block of code for a specific number of times

Executes a block of code at least once, then checks a condition

19 / 50

Which function is used to read a character from the standard input in C?

read()

get()

getchar()

scan()

20 / 50

What is the purpose of the "union" in C?

Groups related variables together

Declares a new data type

Represents a collection of values

Allocates memory dynamically

21 / 50

What is the significance of the "volatile" keyword in C?

Indicates a variable that can be modified asynchronously

Declares a constant variable

Specifies a variable with fixed value

Denotes a variable that cannot be modified

22 / 50

Which of the following is an invalid identifier in C?

_myVar

var123

123Var

my_Var

23 / 50

What is the purpose of the "fwrite" function in C?

Reads data from a file

Writes data to a file

Closes a file

Deletes a file

24 / 50

What does the "static" keyword do in C for a variable?

Declares a variable with a constant value

Allocates memory dynamically

Preserves the value of a variable between function calls

Specifies the scope of a variable

25 / 50

In C, what is the purpose of the "rand" function?

Reads a random number from a file

Generates a random number

Rounds a floating-point number

Returns a random character

26 / 50

What is the output of the following code snippet?

C Quiz img 2

27 / 50

Which header file is required for file input and output operations in C?

fio.h

stdlib.h

stdio.h

fileio.h

28 / 50

What is the purpose of the "void" keyword in a function declaration in C?

Specifies that the function has no return value

Declares a variable with no value

Indicates an empty variable

Denotes a variable with a constant value

29 / 50

Which operator is used for dynamic memory allocation in C?

alloc

new

malloc

allocate

30 / 50

In C, what is the purpose of the "const" keyword?

Denotes a variable that cannot be modified

Allocates memory dynamically

Declares a constant variable

Specifies a variable with a constant value

31 / 50

What is the purpose of the "exit" function in C?

Exits the current loop

Returns a value from a function

Terminates the program

Closes a file

32 / 50

Which of the following is a bitwise OR operator in C?

33 / 50

What is the output of the following code snippet?

1.67

1.5

34 / 50

What is the purpose of the "malloc" function in C?

Allocates memory for a variable

Declares a constant variable

Initializes a variable

Frees allocated memory

35 / 50

In C, what is the purpose of the "goto" statement?

Jumps to a specific label in the program

Exits the current loop

Skips the current iteration of a loop

Continues with the next iteration of a loop

36 / 50

What is the output of the following code snippet?

3.5

37 / 50

Which function is used to open a file in C?

read()

file_open()

fopen()

open()

38 / 50

What is the purpose of the "sizeof" operator ?

Returns the size of a variable

Returns the value of a variable

Returns the address of a variable

Returns the size of a data type

39 / 50

In C, what is the purpose of the "typedef" keyword?

Declares a new data type

Specifies the return type of a function

Allocates memory for a structure

Initializes a structure

40 / 50

What is the purpose of the "strcat" function in C?

Compares two strings

Copies one string to another

Concatenates two strings

Returns the length of a string

41 / 50

Which of the following is a logical NOT operator in C?

42 / 50

What is the output of the following code snippet?

0xF

1111

43 / 50

In C, what is the purpose of the "feof" function?

Checks if the end of a file is reached

Reads a character from a file

Closes a file

Checks if a file exists

44 / 50

What is the purpose of the "strupr" function in C?

Converts a string to uppercase

Concatenates two strings

Compares two strings

Copies one string to another

45 / 50

Which of the following is a bitwise XOR operator in C?

46 / 50

What is the output of the following code snippet?

47 / 50

In C, what is the purpose of the "assert" function?

Prints a message to the console

Terminates the program

Checks if a condition is true, otherwise, aborts

Opens a file

48 / 50

What is the purpose of the "strncpy" function in C?

Concatenates two strings

Copies one string to another

Compares two strings

Returns the length of a string

49 / 50

Which of the following is a valid way to declare a constant in C?

const int x = 10;

int const y = 20;

constant int z = 30;

int z const = 40;

50 / 50

What is the purpose of the "isalpha" function in C?

Checks if a character is a letter

Converts a character to uppercase

Checks if a character is a digit

Checks if a character is a space

Your score is

The average score is 69%

18 thoughts on “C Language Quizs”

K.Aswini
17 March 2024 at 8:26 AM

Well done.

Reply
Rohan Jagtap
18 March 2024 at 2:06 PM

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1. digitalcollegelibrary.com
  18 March 2024 at 2:08 PM
  
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18 March 2024 at 2:23 PM

Give me my certificate of C language 100% Successive completed with Rank 1 Certificate of your quiz

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Harishkumar
19 March 2024 at 11:18 AM

I got 76% give me a certificate

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Bhoomika
20 March 2024 at 8:42 AM

I gave the quiz 2 times, 1st one with 75% and 2nd one with 92%. It has already been 3 days and I have not received the certificate on my email

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1. digitalcollegelibrary.com
  20 March 2024 at 9:21 AM
  
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Nithya Shaga
22 March 2024 at 2:33 PM

I got 92% . Thank you for keeping this quiz by this way I got to know how much I got to know in C language

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1. digitalcollegelibrary.com
  22 March 2024 at 3:59 PM
  
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C Language Quizs

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