What is the purpose of the comment that accompanies a function declaration?

The main purpose of a comment accompanying a function declaration in programming is to provide an explanation and documentation of the function's behavior, its input parameters, expected output, and any side effects or limitations. This helps improve the code's overall readability and understanding, making it easier for both the original author and other developers to work with the code. Some benefits of including comments in function declarations are easier understanding of the code, faster troubleshooting and debugging, better collaboration among team members, and improved productivity as developers can focus on writing new code or fixing bugs without spending extra time deciphering the purpose or behavior of functions.