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malli419
New User
Joined: 16 Apr 2012
Posts: 5
Location: india
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Hi am new to pl1 and and want to know the used of DEFINED keyword
Eg:DCL 1 IN_LOC DEFINED IN_REC |
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PeterHolland
Global Moderator
Joined: 27 Oct 2009
Posts: 2481
Location: Netherlands, Amstelveen
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| The manuals will explain it all. |
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senthilnathanj
New User
Joined: 31 Jul 2007
Posts: 47
Location: chennai
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Hi,
The DEFINED attribute indicates that PL/I is not to allocate storage for the variable, but is to map the description of the variable onto the storage of another variable called the base variable. The DEFINED attribute provides a way to access the same data using different names .
| Code: |
DECLARE NAMES(10) CHARACTER(5) DEFINED (LIST),
LIST(10) CHARACTER(5) |
In this example, the variable NAMES is a defined variable; its data description is mapped to the storage occupied by the variable LIST. Any reference to NAMES or to LIST is resolved to the same location in memory.
Please correct me if i am wrong. |
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malli419
New User
Joined: 16 Apr 2012
Posts: 5
Location: india
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| Thanks dear |
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malli419
New User
Joined: 16 Apr 2012
Posts: 5
Location: india
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| Thank you |
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prino
Senior Member
Joined: 07 Feb 2009
Posts: 1306
Location: Vilnius, Lithuania
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| DEFINED is not deprecated (and won't be ever) , but using UNION is nowadays the preferred alternative and results in better code (and, like based, allows you to overlay anything with anything) |
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