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Forum Index : Microcontroller and PC projects : arrays of strings

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robert.rozee
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Joined: 31/12/2012
Location: New Zealand
Posts: 2289

Posted: 02:40am 28 Feb 2017

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page 55 of the micromite manual gives several examples of using the DIM statement, including:

DIM name AS STRING
DIM strn$(200) LENGTH 20

these two examples suggest to me that the following should work:

DIM info(200) AS STRING LENGTH 16

it does not:

> DIM info(200) AS STRING LENGTH 16
Error: Not enough memory
>

the specified length is ignored. whereas:

Dim STRING info(200) LENGTH 16

behaves as expected:

> Dim STRING info(200) LENGTH 16
> memory
Flash:
1K ( 0%) Program (47 lines)
59K (100%) Free

RAM:
4K ( 7%) 1 Variable
0K ( 0%) General
46K (93%) Free
>

is this (DIM info(200) AS STRING LENGTH 16) the sign of a bug?

cheers,
rob :-)Edited by robert.rozee 2017-03-01

robert.rozee
Guru

Joined: 31/12/2012
Location: New Zealand
Posts: 2289

Posted: 03:01am 28 Feb 2017

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as an aside to this, what is the material difference between a$ and b$ below:

> dim string a$="line one"
> dim b$="line two"
> ? a$
line one
> ? b$
line two
> ? a
line one
> ? b
Error: B already declared
>

ie, if we were to examine the variable tables in memory, what would be different between the two variables to cause the differing behaviour? is there a need for them to be different or to behave differently?

cheers,
rob :-)

MicroBlocks

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Joined: 12/05/2012
Location: Thailand
Posts: 2209

Posted: 03:26am 28 Feb 2017

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I have always have problem remembering the syntax for fixed length string arrays.
The manual does not make it easier.
It is the only statement in the manual that i somehow can not get into my head. :)
The rest of the manual is easy to follow, but that DIM statement for arrays .... i just copy and paste a working snippet, but that does not help to remember also.

Microblocks. Build with logic.

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