I'm writing a little hobby c64 textual adventure and I've stopped in one very concrete moment. Namely, I don't know how to quote anything inside quote.
How to do that inside commodore 64 basic v.2.0.?
You have to generate a string containing the quote character some other way than as a literal. The obvious way is to use CHR$, as in:
? "ONE ";CHR$(34);"QUOTED";CHR$(34);" WORD"
One of the examples at http://www.c64-wiki.com/index.php/CHR%24 is quite similar to this.
If you have to do a lot of them, you could store it in a variable to make the code shorter (which may make it faster or slower - if this matters, measure it yourself)
10 QU$ = CHR$(34)
20 ? "ONE ";QU$;"QUOTED";QU$;" WORD"