From: GBeushausen AT t-online DOT de (Gunnar Beushausen)
Newsgroups: comp.os.msdos.djgpp
Subject: Bison return values
Date: 11 Feb 1997 00:39:52 GMT
Organization: Telekom Online Internet Gateway
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

Hi!

I've a big problem. I wan't to write a getpixel routine for my own BASIC
interpreter GBasic, using BISON. The problem is, i don't know how to
define a BISON function that returns a value. 

The Syntax should be like:

a = getpixel 100, 100

I tried

| GETPIXEL expression',' expression,
that won't work, just like
| expression '=' GETPIXEL expression',' expression.

Can somebody please help me?

---
Gunnar Beushausen
GBeushausen AT t-online DOT de
http://www.hof.de/~gbasic