Comments in C++

Comments are an essential part of C++ programming. They help developers explain and document sections of code, making it easier for others (and yourself) to understand what the code does.

1.    Single-Line Comments

To add a brief comment on a single line, use two forward slashes (//). Everything following the slashes on that line is treated as a comment:

Example:

// This is a single-line comment

int x = 10;  // This comment is on the same line as code

2.    Multi-Line Comments

For longer explanations or to comment out blocks of code, use multi-line comments. These begin with /* and end with */.

Example:

/* This is a multi-line comment.

It can span several lines,

which is useful for longer notes or descriptions. */

int y = 20;

When to Use Comments

• To clarify complex logic or algorithms
• To temporarily disable parts of the code for testing
• To leave reminders or notes for future updates

Using comments effectively can significantly improve code readability and maintenance.

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