C++ Operators Quiz

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Questions and Answers

What will be the result of the expression true && false?

true only if both operands are true

true

false (correct)

undefined

Under which condition does the OR operator (||) return false?

When both operands are false (correct)

When at least one operand is true

When one operand is false

When both operands are true

In the conditional ternary operator, what does the expression evaluate to when the condition is false?

result2 (correct)

undefined

result1

true

What final value does the comma operator return when multiple expressions are evaluated?

The right-most expression's value Signup and view all the answers

Which of the following statements about the && operator is correct?

It returns false if both operands are false. Signup and view all the answers

Which expression correctly uses the conditional ternary operator?

condition ? result1: result2 Signup and view all the answers

What is the output of the expression false || true?

true Signup and view all the answers

What is a common misconception about the && operator?

It returns true if any operand is true. Signup and view all the answers

What is the primary function of the assignment operator '=' in C++?

To assign a value to a variable Signup and view all the answers

Which of the following operators cannot be inherited in C++?

Assignment Operator Signup and view all the answers

Which operator in C++ is used for logical NOT?

! Signup and view all the answers

What do relational operators in C++ do?

Compare values and return a Boolean result Signup and view all the answers

Which of the following is NOT a compound assignment operator?

&&= Signup and view all the answers

What are the operators in C++ that perform comparisons called?

Relational Operators Signup and view all the answers

In the expression 'int a = 10;', what does '10' represent?

An rvalue Signup and view all the answers

What do bitwise operators modify in C++?

The value of variables by considering bit patterns Signup and view all the answers

Which operator would you use to check if two values are equal in C++?

== Signup and view all the answers

Which operator is used to perform a bitwise AND operation in C++?

& Signup and view all the answers

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

To calculate the size of a variable or data type Signup and view all the answers

The output of the sizeof operator is returned in which format?

Integer Signup and view all the answers

What is the equivalent assembly instruction for the bitwise NOT operator (~)?

BIT INVERSION Signup and view all the answers

Which of the following is a true statement about bitwise operators?

They operate on individual bits of binary values Signup and view all the answers

In C++, which operator can be used to shift bits to the right?

<blockquote> <blockquote> </blockquote> </blockquote> Signup and view all the answers

When nesting sizeof operators in C++, what will the output be?

The size of the innermost variable Signup and view all the answers

Study Notes

C++ Operators

An operator is a symbol that performs mathematical or logical operations.
Operators are special functions that accept one or more arguments and return a value.

Assignment operator

The assignment operator = copies a value from the right-hand side (rvalue) to the left-hand side (lvalue).
It is the only operator that can be overloaded, but not inherited.

Compound Assignment Operators

Shorten code by combining assignment with other operators.
Examples: +=, -=, *=, /=, %=, >>=, <<=

Relational and Comparison Operators

Compare values and return a Boolean result (true or false).
Operators include: < (less than), > (greater than), <= (less than or equal to), >= (greater than or equal to), == (equal to), != (not equal to).

Logical Operators

Combine multiple Boolean expressions.
Operators include:
- ! (NOT): Inverts the truth value of an expression.
- && (AND): Returns true if both operands are true.
- || (OR): Returns true if at least one operand is true.

Conditional Ternary Operator

Evaluates an expression and returns one of two values based on the result.
Syntax: condition ? result1 : result2.

Comma Operator

Separates two or more expressions.
Evaluates all the expressions and returns the value of the rightmost expression.

Bitwise Operators

Modify variables by working on their bit patterns.
Operators include:
- & (AND): Performs a bitwise AND operation.
- | (OR): Performs a bitwise inclusive OR operation.
- ^ (XOR): Performs a bitwise exclusive OR operation.
- ~ (NOT): Performs a bitwise complement (inverts all bits).
- << (Shift left): Shifts bits to the left.
- >> (Shift right): Shifts bits to the right.

Sizeof Operator

Calculates the size of a data type or variable.
Returns the size as an integer.
Is a keyword and can be nested.

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Description

Test your knowledge of C++ operators with this quiz. Covering assignment, compound, relational, and logical operators, you'll explore how to effectively use these symbols in coding. Challenge yourself to see how well you understand their functions and applications.