Level Up Your C Programming Operator MCQ:

“Welcome to our MCQ quiz on fundamental topics in the C programming language! In this quiz, we’ll explore essential concepts revolving around Bitwise Operators, Logical Operators, Arithmetic Operators, Relational Operators, and Operator Precedence and Associativity. These topics form the backbone of C programming, influencing how data is manipulated, compared, and controlled within programs. Whether you’re a novice programmer aiming to strengthen your foundational knowledge or an experienced developer seeking to reinforce your skills, this quiz offers a comprehensive examination of these crucial elements. Get ready to enhance your understanding and mastery of C programming through these essential topics!”

Challenge Accepted! Test Your C Operator Knowledge with MCQs

Test your understanding of C programming operators with challenging MCQs! Perfect for beginners and experienced programmers alike. Want to master arithmetic, logical, assignment, and other C operators? Tackle these MCQs and solidify your understanding! Start the MCQs now!

1 / 50

The '!' operator in C is used for

a) Logical NOT

b) Bitwise NOT

c) Negation

d) Decrement

2 / 50

What is the correct way to swap the values of two variables `x` and `y` using the comma operator?

(a) x, y = y, x

- (b) x = y, y = x (Not using the comma operator's return value)

- (c) x += y, y = x - y, x = x - y (Less efficient and prone to overflow)

- (d) Not possible using the comma operator

3 / 50

What is the result of the expression: 5 > 3 && 2 < 4?

a) true

b) false

c) 10

d) -7

4 / 50

What is the precedence of `&&` compared to `||`?

(a) && has higher precedence.

(b) || has higher precedence.

(d) It depends on the data types used.

5 / 50

What is the result of the expression `5 + 2 * 3` in C?

a. 21

b. 17

c. 11

d. 1

6 / 50

The '>>' operator in C is used for:

a) Right shift

b) Left shift

c) Bitwise AND

d) Bitwise OR

7 / 50

Bitwise operators can operate upon?

A. double and chars

B. floats and doubles

C. ints and floats

D. ints and chars

8 / 50

What is the result of the expression: !(5 > 3)?

a) true

b) false

c) 1

d) 0

9 / 50

What can happen if you forget to return a value from a function that has a return type?

- (a) The function will still execute correctly.

- (b) The compiler will automatically return a specific value.

- (c) You may get undefined behavior in your program.

- (d) It only affects functions using pointers.

10 / 50

What is the result of `x & 7` when `x = 13` (binary: 1101)?

(a) 5 (0101)

(b) 7 (1111)

(d) 3 (0011)

11 / 50

What is the result of the expression: 10 % 0?

a) Compiler error

b) Runtime error

c) 0

d) Infinity

12 / 50

What does the bitwise AND operator & do in C?

A) Sets a bit to 1 if it is present in both operands

B) Sets a bit to 0 if it is present in both operands

C) Sets a bit to 1 if it is present in either operand

D) Sets a bit to 0 if it is present in either operand

13 / 50

Which operator is used to compare two values for equality in C?

a. ==

b. =

c. !=

d. ===

14 / 50

What is the logical operator equivalent of `~x`?

(a) !x

(b) x && 0

(d) x >> 1

15 / 50

What is the purpose of the `in` operator in C programming?

a) It is used to check if a variable is within a specified range.

b) It is used to perform bitwise AND operation.

c) C does not have an in operator.

d) It is used to include header files in the program.

16 / 50

What is the result of `a * b + c / d` without parentheses?

(a * b) + (c / d) (Multiplication before addition)

(b) a * (b + c / d) (Division before multiplication)

(d) Cannot be determined without parentheses

17 / 50

Explain the difference between prefix and postfix increment/decrement operators (`++x` vs `x++`).

(a) Prefix increments/decrements before using the value, postfix after.

(b) Prefix only works with integers, postfix with any data type.

(d) They have the same meaning in all cases.

18 / 50

What does the '?:' ternary operator represent in C?

a) Conditional expression

b) Bitwise XOR

c) Assignment

d) Function call

19 / 50

What does the dereference operator (*) do in C?

A) Accesses the address of a variable

B) Multiplies two numbers

C) Accesses the value stored at a memory address

D) Divides two numbers

20 / 50

What is the output of the expression: 10 + 20 * 2 / 4?

a) 15

b) 20

c) 25

d) 30

21 / 50

Which logical operator in C returns true if one operands are true?

A) ||

B) &&

C) !

D) &

22 / 50

How would you use bitwise AND (`&`) to check if a number is even?

(a) x & 1 == 0

(b) x & 2 == 0

(d) x / 2 == 0 (Not reliable for 0)

23 / 50

What does the expression `*ptr` mean if `ptr` is a pointer variable?

A) The value stored in ptr

B) The address of ptr

C) The memory address pointed to by ptr

D) The size of ptr

24 / 50

In C, what is the bitwise XOR operator?

a. ^

b. |

c. &

d. ~

25 / 50

What does the `&&` operator represent in C programming?

a. Logical AND

b. Bitwise AND

c. Conditional AND

d. None of the above

26 / 50

Which of the following types cannot be used as the parameter for a switch statement?

(a) char

(b) boolean

(d) int

27 / 50

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

a) :=

b) +=

c) -=

d) *=

28 / 50

What is the output of the expression: 10 / 0?

a) Compiler error

b) Runtime error

c) 0

d) Infinity

29 / 50

Which operator is used to access the members of a structure through a pointer in C?

a) .

b) ->

c) ::

d) :

30 / 50

What is the difference between `&x` and `*x`?

(a) &x gets the value of x, *x gets the address of x.

(b) Both get the value of x.

(d) &x is for arrays, *x is for pointers.

31 / 50

Which operator is used to perform pointer arithmetic in C?

a) +

b) -

c) *

d) &

32 / 50

Binary Operator that perform arithmatic operations on …… variable

a. 1

b. 2

c. 3

d. 4

33 / 50

A switch statement is used to______

a. Switch between function in a program.

b. Switch form one variable to another variable.

c. Choose from multiple possibilities which may arise due to different values of a single variable

d. Switching between variable and statements.

34 / 50

In C, what is the purpose of the ternary conditional operator (`? :`)?

a. Bitwise XOR

b. Assignment

c. Conditional expression

d. Increment

35 / 50

Operator % in the C language is called................. .

A. Percentage operator

B. Modulus operator

C. Division operator

D. Quotient operator

36 / 50

Which operator is used to obtain the address of a variable in C?

A) *

B) #

C) %

D) &

37 / 50

Table of Contents

What is the value of `x` after `x = (a > b) ? a : b` when `a = 5` and `b = 3`?

(a) 3

(b) 5

(d) 0

38 / 50

In C, what is the difference between `++i` and `i++`?

a. Both increment the variable, but ++i returns the incremented value, while i++ returns the original value

b. ++i increments the variable after its current value is used, while i++ increments the variable before its current value is used

c. ++i and i++ are equivalent and can be used interchangeably

d. ++i is used for integers, and i++ is used for floating-point numbers

39 / 50

Which operator is used to check if two values are not equal in C?

a) !=

b) ==

c) =

d) !==

40 / 50

What will happen if you try to increment a constant using the prefix increment operator `++x`?

- (a) The constant will be incremented and the new value will be used.

- (b) You will get a compiler error because constants cannot be modified. (Correct)

- (c) The value of the constant will remain unchanged.

- (d) The behavior is undefined and depends on the compiler.

41 / 50

What is the danger of using the address-of operator (`&`) with a variable declared using `const`?

- (a) It allows modifying the constant value indirectly.

- (b) It creates a new non-constant variable.

- (c) It's safe as long as you don't modify the value through the pointer.

- (d) It doesn't work with const variables.

42 / 50

What can happen if you use the modulus operator (`%`) with negative numbers?

- (a) It might produce unexpected results depending on the compiler.

- (b) It's always reliable, as it handles negatives automatically.

- (c) It only works with positive numbers.

- (d) It's equivalent to integer division.

43 / 50

Which of these is the MOST common mistake when using operator precedence and associativity?

- (a) Not knowing the order of operations.

- (b) Not using parentheses for clarity.

- (c) Using the wrong operators for the task.

- (d) Ignoring associativity (left-to-right vs. right-to-left).

44 / 50

Comments in C Program are enclosed in which of the following pattern?

a. \*....*\

b. /*.....*/

c. //*.....*//

d. *....*

45 / 50

What does `ptr->member` access in a struct or class?

(a) A static member

(b) A non-static member of the object pointed to by ptr

46 / 50

What is the output of `5 && 0`?

A) true

False

47 / 50

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

a. It returns the size of a variable in bytes

b. It calculates the square root of a number

c. It converts a variable to a string

d. It is used for bitwise shift operations

48 / 50

How can you use the comma operator to swap the values of two variables efficiently?

(a) temp = x, x = y, y = temp

(b) x = x ^ y, y = x ^ y, x = x ^ y (Bitwise XOR, less efficient)

(d) Not possible with the comma operator

49 / 50

What is the value of `x, y = 5, 10`?

(a) 5 (assigning 5 to both x and y)

(b) 10 (assigning 10 to both x and y)

(d) Compiler error

50 / 50

what will be output of following expression x=15-2*(6+18)/3+6

a. 6

b. 7

c. 5

d. 4

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The average score is 40%

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Thank you for your time!

What is the correct way to swap the values of two variables x and y using the comma operator?

What is the result of the expression: 5 > 3 && 2 < 4?

What is the precedence of && compared to ||?

What is the result of the expression 5 + 2 * 3 in C?