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low-values and high-values, About POINTER string

 
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karthi_ind

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Joined: 24 Feb 2004
Posts: 131
Location: Chennai

PostPosted: Sun Jun 06, 2004 3:01 pm    Post subject: low-values and high-values, About POINTER string
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my question is

1. Why picture clause should not be specified for
comp1 and comp2?
i know they hve predefined picture clause but
i need exact reason.

2. whatz the use of pointer option in string command?

3. what are low-values and high-values mean in
figurative constants?

thank u

anbudan
karthi G.
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mcmillan

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Joined: 18 May 2003
Posts: 1203
Location: India

PostPosted: Mon Jun 07, 2004 4:46 pm    Post subject: Re
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Quote:
1. Why picture clause should not be specified for
comp1 and comp2?


The use of PICTURE Clause is to specify the data type, size & format. If you kniow the things already (float, 4&8B, Hex) then there is no need to specify PIC clause.


Quote:
2. whatz the use of pointer option in string command?


To specify the starting position of the receiving string. (also to count the no of receiving characters)

Quote:
3. what are low-values and high-values mean in
figurative constants?


Low-Values refers the lowest value in collating sequence (ASCII / EBCDIC). It's usually B'0000000 in ASCII and B'00000000' in EBCDIC. AND High values refers the highest value of collating seq. It's B'11111111' in EBCDIC AND SO ON... (You can also say as x'00' and X'FF' respectively.[/quote]
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