Operators in Programming Principles: A Comprehensive Guide for Beginners

Question 1

Which logical operator evaluates both conditions and returns true only if both are true?

Accepted Answer

AND

Answer

OR

Answer

NOT

Answer

XOR

Question 2

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

Accepted Answer

=

Answer

+

Answer

*

Answer

==

Question 3

In the code snippet below, what will be the value of x after its execution? int x = 10; int y = 5; x += y;

Accepted Answer

15

Answer

5

Answer

10

Answer

20

Question 4

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

Accepted Answer

=

Answer

+

Answer

-

Answer

*

Question 5

What is the difference between `++i` and `i++`?

Accepted Answer

``++i` increments `i` before the expression is evaluated, while `i++` increments `i` after the expression is evaluated.

Answer

++i decrements i before the expression is evaluated, while i++ decrements i after the expression is evaluated.

Question 6

Which operator is used to compare the equality of two values?

Accepted Answer

==

Answer

=

Answer

!=

Answer

>=

Question 7

Which operator has right associativity?

Accepted Answer

||

Answer

=

Question 8

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

Accepted Answer

=

Answer

+=

Answer

*=

Answer

/=

Question 9

What symbol represents the logical AND operator?

Accepted Answer

&&

Answer

==

Answer

!

Answer

||

Question 10

What is the output of this code: int a = 5; a++; System.out.println(a);

Accepted Answer

6

Answer

4

Answer

5

Answer

Compile-time error

Question 11

Which symbol represents the bitwise OR operator?

Accepted Answer

|

Answer

&

Answer

^

Answer

~

Question 12

What is the result of the expression: true && false || true?

Accepted Answer

true

Answer

false

Answer

compile-time error

Answer

run-time error

Question 13

Which of these is a unary operator?

Accepted Answer

!

Answer

+

Answer

%

Answer

*

Question 14

What is the purpose of the modulus operator?

Accepted Answer

To determine the remainder of a division

Answer

To find the area of a triangle

Answer

To compare two numbers

Answer

To assign a value to a variable

Question 15

Which of these is a valid operator for floating-point numbers?

Accepted Answer

+=

Answer

!

Answer

~

Answer

&&

Question 16

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

Accepted Answer

!=

Answer

=

Answer

==

Answer

&&

Question 17

Examine the code snippet and identify the potential error: int x = 10; int y = 5; if (x equals y) { // do something }

Accepted Answer

The code incorrectly uses 'equals' for comparison instead of '=='

Answer

The code lacks a semicolon (;) at the end of the if statement

Answer

The code incorrectly uses variable names

Answer

The code is written in Java instead of C++

Question 18

What is the correct syntax for assigning a value to a variable in Python?

Accepted Answer

variable_name = value

Answer

variable_name -> value

Answer

value = variable_name

Answer

assign variable_name value

Question 19

Which logical operator checks if both conditions are true?

Accepted Answer

AND

Answer

XOR

Answer

OR

Answer

NOT

Question 20

What is the result of the expression: (5 <= 7) || (3 > 4)?

Accepted Answer

True

Answer

None

Answer

False

Answer

TypeError

Question 21

Which of the following is an example of an increment operator?

Accepted Answer

x++

Answer

x % 2

Answer

x + 1

Answer

x--

Question 22

Which of the following is a unary operator?

Accepted Answer

NOT

Answer

+

Answer

&&

Answer

==

Question 23

Describe the purpose of the conditional operator (?:).

Accepted Answer

To evaluate an expression and return a different value based on the result.

Answer

To compare two values and return a Boolean value.

Answer

To assign a value to a variable.