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Why in PL/I the check for Blank fails

 
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Balanim
Beginner


Joined: 29 Jan 2004
Posts: 21
Topics: 8
PostPosted: Mon Jul 31, 2006 8:28 am    Post subject: Why in PL/I the check for Blank fails Reply with quote
Hi Friends

I am using some code like this in PLI

Code:
PUT SKIP LIST( 'TIME_INPUT_PRINT',TIME_INPUT);
IF TIME_INPUT ^= ' ' THEN
    CALL TRANSLATE_TIME;
ELSE; --> Do nothing   

Here TIME_INPUT is delcared as CHAR(2)

The putskip list prints the value of the variable as Blank but still
it calls the Proc TRANSLATE_TIME

this is not the first happening to me.
Can anybody please tell me how it can call even the value of variable is Blank

Thanks & Regards
Nim
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kolusu
Site Admin
Site Admin


Joined: 26 Nov 2002
Posts: 12376
Topics: 75
Location: San Jose
PostPosted: Mon Jul 31, 2006 8:38 am    Post subject: Reply with quote
Balanim,

Try checking as

[code:1:4e6e8684c1]
IF TIME_INPUT
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Kolusu
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Grant
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Joined: 02 Dec 2002
Posts: 45
Topics: 1
Location: Sydney, NSW, Australia
PostPosted: Mon Jul 31, 2006 6:53 pm    Post subject: Reply with quote
Balanim,
You said the variable prints as blank - did you display the value in hex ? perhaps it has a non-printable value ...
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