Logical operators in C#: select all that are logical (short-circuit or logical-not) operators from the list: 1) && 2) || 3) ! 4) Xor 5) %

Difficulty: Easy

Correct Answer: 1, 2, 3

Explanation:

Introduction / Context:In C#, logical operators operate on Boolean expressions. Knowing which tokens are logical is essential to write clear, correct conditions.

Given Data / Assumptions:

  • We compare five tokens: &&, ||, !, Xor, %.

Concept / Approach:C# supports logical AND (&&), logical OR (||), and logical NOT (!). These are Boolean operators; && and || also short-circuit. C# does not have a keyword Xor; exclusive-or is the bitwise operator ^. The percent sign % is the remainder operator, not logical.

Step-by-Step Solution:

Identify logical operators: &&, ||, ! → items 1, 2, 3.Exclude Xor (VB keyword; in C# use ^) and % (arithmetic remainder).

Verification / Alternative check:Compile sample conditions showing that &&, ||, ! operate on bool; try Xor and see it fail in C#; % only works on numeric types.

Why Other Options Are Wrong:They include non-logical or non-C# keywords.

Common Pitfalls:Confusing VB's Xor with C#'s ^; mixing arithmetic with logical operators.

Final Answer:1, 2, 3

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