multi-statement in zx81 basic?

[msknight]

From what I'm reading, I believe that ZX81 doesn't allow multiple commands off the back of one IF THEN statement, but I thought I'd ask here to be sure.

[1024MAK]

ZX81 BASIC only allows one command per line. IF being a "special" case, but you can only have one command after the THEN, the THEN being mandatory.

Of course, you can have another IF after the THEN. You can also have a complex expression as part of the IF.

Mark

[msknight]

Thanks for confirming. Just going to have to write more code

[dr beep]

Thanks for confirming. Just going to have to write more code

Easiest is
IF condition THEN GO SUB linenumber

and at linenumber code mutiple lines and end with RETURN

[msknight]

Cheers. In my case, it's just two statements so I might as well leave it at that for what I'm doing... but I'll keep that in mind for the future.

[GCHarder]

Implementing multistatement lines is actually fairly simple, in MC. It's just a matter of keeping track of the chr addresses in the line.

The program "SHREB" from 1986 uses multistatement lines. Since you have a ZXPand you maybe interested in these programs...

https://www.sinclairzxworld.com/viewtop ... =11&t=4739

Greg