Passing the value of one option to another

Question

A rather silly Vim question, but I've something to do, and I'm not finding the solution in help. So here goes ...

(this is just an example, I'm not necessarily interested in guifont and printfont only)

set guifont?

gives out ...

How can I say,

set printfont=guifont

i.e. pass the string you get from guifont? to printfont?

Answer 1

let &printfont = &guifont

seems to work fine.