Adding Unrendered Code To Post - Or Click To Copy Code?

I want to add an easy way for people to copy code so that they can share links to my website, but I seem be Google blocked today. I can find a thing.

Any suggestions on a way to at least post unrendered code for people to copy and paste into their own websites?

I'm sorry, I know this is probably about the dumbest question ever asked here - but I'm just not finding any good solutions.

Thanks!

~ Corey