problem with get in a for loop

[miguel]

Hi,

I'm learning Harbour, so there maybe a simple answer to this.

When I run a get inside a for loop the get I get a strange behavior.
The say will always begin by displaying the second iteration index -
in this case i=2, but I've tried starting with a different i and the
result is always i+1
This also, results in getlist[i] == nil // where is is the first value
of the for loop index

function main()
local getlist
local tb := Array(5)
local i
local n
setmode(24,75)

clear screen
clear gets

for i=1 to len(tb)
@1,1 say str(i) + "Value: " get n
read
tb[i]:=n
n:=0
next

@10,10 say tb[1]
inkey(0)

return nil

Txs for the help,
miguel

[Massimo Belgrano]

is very bad pratice have a read inside a  for 

and when you made you need remember

lifetime of getlist and add GetList := {}, 

2012/6/4 miguel <mig.e...@gmail.com>

--
Massimo Belgrano

[miguel]

Ok.

If it's bad practice I'll refrain from doing it.

What do you mean about the lifetime of getlist?
I "suppose" being declared local will make it available inside the
main function. What am I missing?

Please note that I'm a beginner and have been reading about clipper
but I have not found much free resources. So I very much appreciate
any help I get or links to resources where I could learn more.

Txs,
miguel

On Jun 4, 1:44 pm, Massimo Belgrano <mbelgr...@deltain.it> wrote:
> is very bad pratice have a read inside a  for
> and when you made you need remember

> lifetime of getlist and add *GetList* := {},
>
> 2012/6/4 miguel <mig.e.lo...@gmail.com>
>

[José M. C. Quintas]

You put n := 0 after get, and in first get it has no value.

 

Try:

Local n := 0 // default to N

 

Or, in the style of your source:

 

Afill( tb, 0 ) // Default value for each array element

for i=1 to len(tb)

   n := tb[i] // assign old value

   @1,1 say str(i) + "Value: " get n

   read

   tb[i]:=n

next

 

José M. C. Quintas

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[Evangelos Tsakalidis]

Hallo.

I think that your broblem is there : "   @1,1 say str(i) + "Value: " get n  ".

In one place you want to have many gets...

Tsakalidis G. Evangelos

Serres / Greece

2012/6/4 José M. C. Quintas <josed...@mandic.com.br>

[miguel]

That's it. If n was initialized it wouldn't be a problem.
So I think that maybe the get systems prefers vars to be initialized
(even if untrue, it should not hurt).

Txs,
miguel

On Jun 4, 5:08 pm, José M. C. Quintas <josedon...@mandic.com.br>
wrote:

> You put n := 0 after get, and in first get it has no value.
>
> Try:
> Local n := 0 // default to N
>
> Or, in the style of your source:
>
> Afill( tb, 0 ) // Default value for each array element

...