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Choose the Best: What's error in the followinf code?

 
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sungang77

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Joined: 03 Nov 2005
Posts: 46
Location: Shanghai, China

PostPosted: Tue Nov 22, 2005 11:58 am    Post subject: Choose the Best: What's error in the followinf code?
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Code:
MAINLINE.                                                               
SET S-NOT-END-OF-FILE TO TRUE                     
  PERFORM A0100-PROCESS-RECS                                   
    UNTIL S-END-OF-FILE       
  END-PERFORM.     
                                                                     
 A0100-PROCES-RECS.
  READ I-PLAYER-FILE                                             
    AT END   
       ADD +1           TO A-FILES-PROCESSED
    NOT AT END
       PERFORM A0200-INC-TOTALS
    END-READ.

Question:The sample code above should handle a process of reading an input file and using an amount from the file to increment totals. The calculation section is NOT shown. What error in the sample code will prevent this process from working correctly?
Choice 1
A priming read should be done before the PERFORM.
Choice 2
S-END-OF-FILE is never set to true.
Choice 3
S-NOT-END-OF-FILE should not be set before the first read.
Choice 4
A mathematical statement cannot be used with an AT END clause.
Choice 5
The PERFORM?UNTIL should be based on a counter not end-of-file switch.
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mmwife

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Joined: 30 May 2003
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PostPosted: Wed Nov 23, 2005 8:01 am    Post subject:
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Choice 2. No eof indication to stop the loop = infinit loop.
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sungang77

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Joined: 03 Nov 2005
Posts: 46
Location: Shanghai, China

PostPosted: Wed Nov 23, 2005 8:17 am    Post subject:
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mmwife wrote:
Choice 2. No eof indication to stop the loop = infinit loop.


Yeah, I think you are right Jack.
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Santoshhn

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Joined: 18 May 2005
Posts: 5

PostPosted: Wed Nov 23, 2005 7:28 pm    Post subject: Re: Choose the Best: What's error in the followinf code?
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Program will be in Loop..
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