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Forum Index : Microcontroller and PC projects : MM basic

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palcal

Guru

Joined: 12/10/2011
Location: Australia
Posts: 1873

Posted: 06:27am 07 Jan 2012

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Does anyone know if MM basic supports nested For Next Loops, I have tried to use one and keep getting error message 'for without next'.
Also have written a program using Labels instead of line nos. and when using GOSUB get an error message 'cant find label'.

Paul.

"It is better to be ignorant and ask a stupid question than to be plain Stupid and not ask at all"

seco61
Senior Member

Joined: 15/06/2011
Location: Australia
Posts: 205

Posted: 06:32am 07 Jan 2012

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Hi Paul.

Yes, MMBasic does support nested For Next. Please post a sample of your code that is getting the error and we can check for syntax issues.

As regards the Labels with MMBasic 3.0 - it should work but I know there are some minor bugs in the initial release and Geoff will be releasing 3.0A in the near future to resolve those issues. I am not certain if your problem is one of the bugs - best to go to Geoff's web site and check out the "known bugs" section.

palcal said Does anyone know if MM basic supports nested For Next Loops, I have tried to use one and keep getting error message 'for without next'.
Also have written a program using Labels instead of line nos. and when using GOSUB get an error message 'cant find label'.

Paul.

Regards

Gerard (vk3cg/vk3grs)

crackerjack

Senior Member

Joined: 11/07/2011
Location: Australia
Posts: 164

Posted: 07:01am 07 Jan 2012

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Make sure you identify which NEXT relates to which FOR and that they don't overlap; e.g.:

Good ===>

FOR i = 1 to 10
FOR j = 1 to 10
? i * j
NEXT j
NEXT i

Bad ==>

FOR i = 1 to 10
FOR j = 1 to 10
? i * j
NEXT
NEXT

Worse! ==>

FOR i = 1 to 10
FOR j = 1 to 10
? i * j
NEXT i
NEXT j

Cheers....

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