What is the use of acomment?

Answer 1

To make yourself some notes about the algorythm, or to make it more readable for others.

Answer 2

I don't know about you, but most people don't remember their entire code after like a month.
Comments are there to remind us what we did, and why we did.

Answer 3

commenting your code is a very good programmer practice.
it helps you remember what code does what in your code and also makes your code easy to read by you or someone going through it.

Answer 4

used to keep info that you don't want to go back though all of your script to fine for example an intager