Commenting allows you to type stuff that you don’t want the computer to run as code. For example, notes to other programmers, directions, and more. Here’s how to create a single-line comment.
// Hey, I'm a comment!
Now, if you want to comment an entire paragraph, that can be easily accomplished with…
/* Hey, I'm a paragraph comment. This allows for programmers to write tons and tons of random words, without the fear of me being compiled! */