[Color Computer] [Coco] Bug in FOR NEXT ?

[Robert Gault]

It is not unique but depends on the structure of the loop. A FOR/NEXT 
loop has the test as part of the FOR portion and the variable update as 
part of the NEXT. Therefore the loop can't exit until A=11 for the case 
below.

A=10: FOR=true: (process loop internal, if any): NEXT A=A+1: A=11: 
FOR=false: exit loop

James Diffendaffer wrote:

> Congratulations... you just discovered the most common test question
> from any BASIC programming class.
> It would list a program like that and ask what the output was.
> In other words... that's not unique to the Coco.
> 
> 
>>I can't believe that after +20 years with the CoCo I never got into 
>>this... weird.
>>Thanks
>>
>>
>>Benoit Bleau wrote:
>>
>>
>>>Diego,
>>>That's not a bug... In (at least the coco) basic, the "for-next" 
>>>variable  contains +1 at the end of the loop.
>>>Try this:
>>>10 FOR A=1 to 10: NEXT
>>>20 PRINT A
>>>
>>>This should print 11.
> 
> 
> 
> 
> 
> 
>