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Query regarding variable length cobol table

 
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bipinpeter

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Joined: 18 Jun 2007
Posts: 208
Location: Cochin/Kerala/India

PostPosted: Mon Feb 22, 2010 4:53 pm    Post subject: Query regarding variable length cobol table
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Hi All,
I have a query regarding the Cobol array.
I am defining a two dimensional array in Cobol and the second dimension is variable length length.

Sample of code is like below,

Code:
05 WS-ARRAY1  OCCURS 10 TIMES.
     10 WS-A     PIC X(02).
     10 WS-B     PIC 9(04).
     10 WS-ARRAY2  OCCURS 0 TO 10 TIMES DEPENDING ON WS-LIMIT.
          15 WS-C   PIC X(04).
          15 WS-D   PIC 9(07).


Can any one give an idea how the memmory allocation will happen for this?.

Suppose initially if WS-LIMIT is zeroes, it will allocate the memmory for first dimesion only. What will happen if we increment the values in WS-LIMIT.??

Can you suggest any doc for this?
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Robert Sample

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Joined: 06 Jun 2008
Posts: 7932
Location: Bellevue, IA

PostPosted: Mon Feb 22, 2010 6:21 pm    Post subject:
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Assuming this is a WORKING-STORAGE variable, COBOL allocates memory for all elements of the array since the actual count will not be known at compile time. For the WS-ARRAY1 variable, 1160 bytes will be allocated. You can verify this with the data map at the end of the compile listing (assuming you're getting one generated).
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