Question How to add code to post

so i have been wondering how people add like there code from their main dirrectory into the post
it will be appreciated if u can help.

 

You can use php or code tags, which look like this: [php]Put PHP code inside of me![/php] and [code]Put code inside of me![/code].

This will result in this:

PHP:

Put PHP code inside of me!

Code:

Put code inside of me!

Then just copy - paste the code inside of them.