C++ - Comments

In C++, comments are used to include explanatory or descriptive text within the code. Comments are ignored by the compiler and do not affect the execution of the program. They are solely meant for human readers to understand the code better.

C++ supports two types of comments:

Single-line comments: Single-line comments start with two forward slashes "//" and continue until the end of the line. Anything written after "//" is considered a comment and is ignored by the compiler. For example:

// This is a single-line comment
int x = 5; // This line declares and initializes the variable x

Multi-line comments: Multi-line comments, also known as block comments, can span across multiple lines. They start with a forward slash followed by an asterisk "/" and end with an asterisk followed by a forward slash "/". Anything written between "/" and "/" is treated as a comment. For example:

/* This is a multi-line comment
   It can span across multiple lines
   and is ignored by the compiler */
int y = 10; // This line declares and initializes the variable y

It is good practice to include comments in your code to provide clarity and make it easier for others (or yourself) to understand the code's purpose, logic, or any important details. Comments can be used to document function definitions, explain complex algorithms, provide usage instructions, or annotate code for debugging purposes.