Is This UDT Correct

[Michael Mattias]

> DIM realArray(1 TO 15) AS LONG AT VARPTR(Rec.Item(1))
....
>I'm not sure if it also applies to PBDOS

Yes, the principle applies, but the syntax is a little different.

See post#6 this thread.

MCM

[Jeff Blakeney]

The thing you need to keep in mind with arrays in UDTs is that you can't use the array commands on them. ARRAY ASSIGN, ARRAY DELETE, ARRAY INSERT, ARRAY SCAN, ARRAY SORT or ARRAYATTR. They aren't stored as regular PB arrays which is why Michael Mattias refers to them as tables instead. You can use those commands if you create an absolute array at the location of the "array" in the UDT using a command like this:

DIM realArray(1 TO 15) AS LONG AT VARPTR(Rec.Item(1))

This all applies to PBWin. I'm not sure if it also applies to PBDOS.

[Rodney Hicks]

PB DOS 3.5 (don't know about other versions) indeed allows arrays in UDTs: I have used them a lot in the past.

The quote in the earlier post of mine was from PB DOS 3 manual from many many moons ago which I received with my PB DOS 3.5. Any upgrades may not be included, and I don't know if the manual was ever reprinted(since I got mine) to include some of the updated info.

[Manuel Valdes]

Certainly Type/End Type structures in PBDOS accept FIXED LENGTH strings, even in PB3.1, but AFAIK, as Rodney pointed out, not variable length strings.

On the other hand in PB31 you can have an Array of types, but you can't include arrays within a Type, which in PB3.5 is perfectly possible

Also note that in PB3.1 the underscore is not allowed within the variable names

PB3.1

 
CLS
TYPE RecStock
 Cust AS STRING*14
 Item AS LONG
 Price AS LONG
END TYPE
DIM Rec(0 to 15) AS RecStock
FOR I%=0 TO 15
 Rec(I%).Cust="NOT DISCLOSED"
 Rec(I%).Item=5*I%
 Rec(I%).Price=I%*1000
NEXT I%
CALL MySub(Rec())
END
SUB MySub(Rec() AS RecStock)
 FOR I%=1 TO 15
  Print Rec(I%).Cust;CHR$(32);Rec(I%).Item;CHR$(32);Rec(I%).Price
 NEXT I%
END SUB

PB3.5

 
CLS
TYPE Rec_Stock
 Cust(1 TO 15) AS STRING*14
 Item(1 TO 15) AS LONG
 Price(1 TO 15) AS LONG
END TYPE
DIM Rec(10) AS Rec_Stock
FOR J%=1 TO 10
 FOR I%=1 TO 15
  REC(J%).Cust(I%)="NOT DISCLOSED"
  Rec(J%).Item(I%)=I%*J%
  Rec(J%).Price(I%)=J%*1000
 NEXT
NEXT
CALL MySub(Rec())
END
SUB MySub(Rec() AS Rec_Stock)
 FOR J%=1 TO 10
  FOR I%=1 TO 15
   Print Rec(J%).Cust(I%);CHR$(32);Rec(J%).Item(I%);CHR$(32);Rec(I%).Price
  NEXT 
 NEXT
END SUB

[Scott Slater]

PB DOS 3.5 (don't know about other versions) indeed allows arrays in UDTs: I have used them a lot in the past.

That is correct, it was added as a new feature in 3.5 (See Readme.txt in main directory).

[José Roca]

PB DOS 3.5 (don't know about other versions) indeed allows arrays in UDTs: I have used them a lot in the past.

The program works as expected:

TYPE Rec_Stock
   Cust AS LONG
   Item(1 TO 15) AS LONG
   Price(1 TO 15) AS LONG
   Ount(1 TO 15) AS LONG
END TYPE

DECLARE SUB MySub(Rec AS Rec_Stock)


DIM Rec AS Rec_Stock
DIM I AS INTEGER

FOR I%=1 TO 15
   Rec.Item(I%)=0
NEXT I%

' Now, I 'm ASKING

' 1. IF THIS UDT CORRECT ?

' 2. IF Yes, INSIDE THE SUB ,THE VALUE ARE NOT ZERO , WHY?

' CALL SUB

MySub rec

END


SUB MySub(Rec AS Rec_Stock)

   DIM I AS INTEGER

   FOR I%=1 TO 15
      IF Rec.Item(I%)=0 THEN ITERATE FOR
      ' THE VALUE IN NOT 0 ,WHAT IS WORNG?
      PRINT Rec.Item(I%)
   NEXT I%

END SUB ' Of MySub

[Rodney Hicks]

From the manual:

An element in a TYPE/END TYPE type can be any PowerBASIC type except an array or variable-length string.

[Manuel Valdes]

Dery:

Thinking further, may be you were expecting to see the message "It's not 0, what is wrong?" so as to see how the instruction ITERATE works.

If so, you have to remove the "comment ' " , and put a Print instead.

Regards,

[Manuel Valdes]

Dery:

I compiled your code slightly modified with PB35 and think it works right

 
CLS
 
TYPE Rec_Stock
 Cust AS LONG
 Item(1 TO 15) AS LONG
 Price(1 TO 15) AS LONG
 Ount(1 TO 15) AS LONG
END TYPE
 
DIM Rec AS Rec_Stock
 
FOR I%=1 TO 15
 Rec.Item(I%)=0  ' put here whatever value 
NEXT I%
 
 MySub Rec
 
END
 
SUB MySub(Rec AS Rec_Stock)
 FOR I%=1 TO 15
  Print Rec.Item(I%)  ' actually print the right value
  If Rec.Item(I%)= 0 then ITERATE 
  Print "It's not 0, What is wrong?"
 NEXT I%
END SUB ' Of MySub

[Michael Mattias]

>If I remember correctly PBdos udt's do not allow arrays in the udt.

I think you may be right about that (can't find any reference to tables/arrays in the PB/DOS help file)... but then, how did the program compile?

Regardless you could use an absolute array to simulate this...

TYPE Rec_Stock
  Cust AS LONG
  ITEMX AS STRING * 60   ' size of 15 four byte LONGs
  PriceX AS STRING * 60   '  ditto
  OuntX AS STRING * 60   ' ditto
END TYPE

  DIM Item_Rec AS Rec_stock
  DIM ABSOLUTE ITEM (1 to 15) AS LONG AT VARPTR32(Item_Rec.ItemX) 
 FOR Z   = 1 TO 15 
        Item(Z) = value 
 NEXT

That's close, anyway.

Can't remember if you are supposed to DEF SEG somewhere and DIM AT VARPTR, or just use the segffset form of address packed as a VARPTR32().

MCM

[keith shelton]

If i remember correctly PBdos udt's do not allow arrays in the udt.
KS

[Mike Doty]

Hopefully, code above is closer to DOS.
Please place your program within code tags so we can copy and paste it.
Posted code block should start with CODE enclosed within brackets.
The code block should end with /CODE enclosed within brackets.

Note:
Code placed within a code block can later be copied by others by
holding down the ctrl key and left-clicking to the left or right of the code block area.

A DOS person will have to help since your code works with PBWin9.

[dery yosi]

Thank's but

I NEED IN PB/dos code ,there it's not work

[Mike Doty]

TYPE Rec_Stock
  Cust AS LONG
  ITEM(1 TO 15) AS LONG
  Price(1 TO 15) AS LONG
  Ount(1 TO 15) AS LONG
END TYPE
 
DIM Rec AS Rec_Stock
Rec.Item(15) = 999
CALL MySub(Rec)
 
SUB MySub(Rec AS Rec_Stock)
  DIM I AS INTEGER
  FOR I=1 TO 15
    IF Rec.Item(I)=0 THEN PRINT "I =" + STR$(i):ITERATE FOR
    PRINT  "AFTER ITERATE" + STR$(Rec.ITEM(i))
  NEXT I
END SUB

[dery yosi]

TYPE Rec_Stock
Cust AS LONG
Item(1 TO 15) AS LONG
Price(1 TO 15) AS LONG
Ount(1 TO 15) AS LONG
END TYPE

DIM Rec AS Rec_Stock

FOR I%=1 TO 15
Rec.Item(I%)=0
NEXT I%

' Now, I 'm ASKING

' 1. IF THIS UDT CORRECT ?

' 2. IF Yes, INSIDE THE SUB ,THE VALUE ARE NOT ZERO , WHY?

' CALL SUB

MySub rec

END


SUB MySub(Rec AS Rec_Stock)

FOR I%=1 TO 15
IF Rec.Item(I%)=0 THEN ITERATE FOR
' THE VALUE IN NOT 0 ,WHAT IS WORNG?
NEXT I%

END SUB ' Of MySub