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How to use pointers in cobol

 
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akshathan

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Joined: 18 Aug 2006
Posts: 43

PostPosted: Mon Nov 27, 2006 12:30 pm    Post subject: How to use pointers in cobol
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Hi all,

I just want an example where pointer usage is being shown in a program.
I didnt find any example which will help me how to use pointers in cobol.
Help me out.



regards
Akshatha
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rajesh_mbt

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Joined: 27 Mar 2006
Posts: 95
Location: India

PostPosted: Mon Nov 27, 2006 2:50 pm    Post subject: Re: Pointer in COBOL
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Hi Akshatha

A COBOL pointer is like a void pointer in C: it can point to any kind of object. Pointers are mainly useful for stitching together various data objects to form a data structure. Typically, data structures are built from dynamically allocated memory.

Declare a pointer as an elementary data item bearing the USAGE IS POINTER clause, with no PICTURE. E.g:
05 EXAMPLE-P USAGE IS POINTER.

EXAMPLE-P is a four-byte field which can store the address of any data item. Unless you're interfacing COBOL to Assembler or something, you really don't care what the pointer looks like internally.
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