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echo: cbm
to: All
from: Shaun Bebbington
date: 2018-04-11 03:33:14
subject: Something strange going on.

Hi,

I found something odd today in the powerful CBM BASIC v2.0.

Having worked with Sinclair BASIC quite a lot recently, I use GOTO X where
X is a valid line number (i.e., LET X = 100). But I know that's not
possible with Microsoft BASIC. Of course there is the ON X GO TO 100,200
...

So I thought "I know, I'll try and use a function, could CBM BASIC use
this as a look up table". The following, I expected to go to the value
in the function A() which returns 10, but...

0 DEF FN A(X) = 10
1 PRINT FN A(0)
2 GO TO FN A(0)
3 PRINT "END GRACEFULLY"
4 END
10 PRINT "STOP"
11 STOP

Try it for yourself. What's going on here?

Thanks in advance.

Shaun.

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