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C# Comments

Comments in C# are used to improve code readability and help developers understand what the code does. They are completely ignored by the compiler during execution. C# supports three main types of comments: single-line comments, multi-line comments, and XML comments.

Key Concepts

Single-line Comments

Single-line comments in C# start with two forward slashes //. Anything written after // on that line will be ignored by the compiler and treated as a comment.

Example: Single-line Comment

// This is a single-line comment
Console.WriteLine("Hello, World!");

Output:

Hello, World!

Explanation: The // comment is ignored by the compiler, and only the Console.WriteLine() statement is executed.

Multi-line Comments

Multi-line comments begin with /* and end with */. Everything between these markers is considered a comment, even if it spans multiple lines.

Example: Multi-line Comment

/* This is a multi-line comment
   It can span multiple lines. */
Console.WriteLine("Multi-line comments in action.");

Output:

Multi-line comments in action.

Explanation: Everything between /* and */ is ignored by the compiler. Multi-line comments are typically used for longer explanations or to temporarily disable sections of code.

XML Comments

XML comments in C# start with three forward slashes /// and are used to document the structure and behavior of your code. XML comments can be processed by documentation tools to generate detailed API documentation.

Example: XML Comment

/// 
/// This method prints a message to the console.
/// 
public void PrintMessage()
{
    Console.WriteLine("XML comments example.");
}

Output:

XML comments example.

Explanation: XML comments are used to describe methods, classes, and other elements of your code. They are useful for generating external documentation that explains the functionality of your code.

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