On Wednesday, April 11, 2018 at 6:33:17 AM UTC-4, Shaun Bebbington wrote:   
   > 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.   
      
   You SHOULD get a syntax error. Commodore (Microsoft) BASIC is supposed to only   
   allow numeric constants, not variables after GOTO and GOSUB. What do you   
   actually see happening?   
      
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