ALLInterview.com :: Home Page            
 Advertise your Business Here     
Browse  |   Placement Papers  |   Company  |   Code Snippets  |   Certifications  |   Visa Questions
Post Question  |   Post Answer  |   My Panel  |   Search  |   Articles  |   Topics  |   ERRORS new
   Refer this Site  Refer This Site to Your Friends  Site Map  Bookmark this Site  Set it as your HomePage  Contact Us     Login  |  Sign Up                      
Google
   
 
Categories >> Software >> MainFrame >> IBM MainFrame >> COBOL
 
 


 

 
 COBOL interview questions  COBOL Interview Questions (849)
 JCL interview questions  JCL Interview Questions (700)
 CICS interview questions  CICS Interview Questions (448)
 DB2 interview questions  DB2 Interview Questions (668)
 IMS interview questions  IMS Interview Questions (79)
 IDMS interview questions  IDMS Interview Questions (6)
 Natural interview questions  Natural Interview Questions (39)
 ADABAS interview questions  ADABAS Interview Questions (7)
 REXX interview questions  REXX Interview Questions (21)
 Assembler interview questions  Assembler Interview Questions (29)
 CLIST interview questions  CLIST Interview Questions (1)
 QMF interview questions  QMF Interview Questions (4)
 MVS interview questions  MVS Interview Questions (11)
 OS390 interview questions  OS390 Interview Questions (9)
 OS 2 interview questions  OS 2 Interview Questions (0)
 VSAM interview questions  VSAM Interview Questions (177)
 QSAM interview questions  QSAM Interview Questions (3)
 Sysplex interview questions  Sysplex Interview Questions (5)
 IBM MainFrame AllOther interview questions  IBM MainFrame AllOther Interview Questions (128)
Question
How to read records in reverse order in flat file?
I know we can do it by reading all records into an array....
Then read records in reverse order by using subscript or index
but can any body give me the exact code.
 Question Submitted By :: COBOL
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
you can try this i will give 100% exact output...by
CH. RANVEER SINGH GURJAR





IDENTIFICATION DIVISION.
PROGRAM-ID. 'OCCURS'.
ENVIRONMENT DIVISION.
INPUT-OUTPUT SECTION.
FILE-CONTROL.
SELECT INFILE ASSIGN TO DD1.
SELECT OUTFILE ASSIGN TO DD2.
DATA DIVISION.
FILE SECTION.
FD INFILE.
01 INREC.
05 IN-EMP-ID PIC X(5).
05 IN-EMP-NAME PIC X(10).
05 FILLER PIC X(65).
FD OUTFILE.

01
OUTREC.
05 OUT-EMP-ID PIC X(5).

05 OUT-EMP-NAME PIC X(10).

05 FILLER PIC X(65).

WORKING-STORAGE
SECTION.
01 WS-COUNT PIC 9(4) VALUE ZEROS.

01 EOF PIC X(1) VALUE 'N'.



01ARRAY1.
05 ARREC OCCURS 1 TO 50 TIMES DEPENDING ON WS-COUNT.

10 AR-EMP-ID PIC X(5).

10 AR-EMP-NAME PIC X(10).

PROCEDURE
DIVISION.
OPEN INPUT
INFILE.
OPEN OUTPUT
OUTFILE.
PERFORM MOVE-RECORD UNTIL EOF = 'Y'.

PERFORM PARA1 UNTIL WS-COUNT = ZEROS

CLOSE
INFILE.
CLOSE OUTFILE.
STOP RUN.
MOVE-RECORD.
READ INFILE AT END MOVE 'Y' TO EOF
NOT AT END
MOVE INREC TO ARREC(WS-COUNT)
ADD 1 TO WS-COUNT.
PARA1.
MOVE ARREC(WS-COUNT) TO OUTREC
WRITE OUTREC
SUBTRACT 1 FROM WS-COUNT.
 
Is This Answer Correct ?    9 Yes 3 No
Ch. Ranveer Gurjar
 
Answer
# 2
Narayan if we use your sort card we will get records in
reverse order but along with sequence numbers in cols 81-
84. You are not trimming the seq numbers

Stp1:
SORT FIELSD=COPY
OUTREC=(1,80,SEQNUM,4,ZD)

stp2:
SORT FIELSD=(81,4,ZD,D)
Outrec=(1,80)

The output file will have the records in reverse order.
 
Is This Answer Correct ?    4 Yes 0 No
Muttaiah
 
 
 
Answer
# 3
You Can do it through JCL sort. Just add a seq number at the
last position of each record and sort it in descending order
of that seq number.
Here is the exacet code.
SORT FIELSD=COPY
OUTREC=(1,80,SEQNUM,4,ZD)
If your ps file is 80 byte long then this sort card a 4
digit seq num at 81 postion.
Now Sort the file on this seq num in descending
SORT FIELSD=(81,4,ZD,D)
 
Is This Answer Correct ?    2 Yes 0 No
Narayan
 
Answer
# 4
New update..by Ch. Ranveer Singh



IDENTIFICATION DIVISION.
PROGRAM-ID. 'OCCURS'.
ENVIRONMENT DIVISION.
INPUT-OUTPUT SECTION.
FILE-CONTROL.
SELECT INFILE ASSIGN TO DD1.
SELECT OUTFILE ASSIGN TO DD2.
DATA DIVISION.
FILE SECTION.
FD INFILE.
01 INREC.
05 IN-EMP-ID PIC X(5).
05 IN-EMP-NAME PIC X(10).
05 FILLER PIC X(65).
FD OUTFILE.
01 OUTREC.
05 OUT-EMP-ID PIC X(5).
05 OUT-EMP-NAME PIC X(10).
05 FILLER PIC X(65).
WORKING-STORAGE SECTION.
01 WS-COUNT PIC 9(4).
01 EOF PIC X(1) VALUE 'N'.
01 ARRAY1.
05 ARREC OCCURS 1 TO 50 TIMES DEPENDING ON WS-COUNT.
10 AR-EMP-ID PIC X(5).
10 AR-EMP-NAME PIC X(10).
PROCEDURE DIVISION.
MOVE 1 TO WS-COUNT.
OPEN INPUT INFILE.
OPEN OUTPUT OUTFILE.
PERFORM MOVE-RECORD UNTIL EOF = 'Y'.
PERFORM PARA1 UNTIL WS-COUNT = ZEROS
CLOSE INFILE.
CLOSE OUTFILE.
STOP RUN.
MOVE-RECORD.
READ INFILE AT END MOVE 'Y' TO EOF
NOT AT END
MOVE INREC TO ARREC(WS-COUNT)
ADD 1 TO WS-COUNT.
PARA1.
MOVE ARREC(WS-COUNT) TO OUTREC
WRITE OUTREC
SUBTRACT 1 FROM WS-COUNT.
 
Is This Answer Correct ?    1 Yes 0 No
Ch. Ranveer Singh Gurjar
 

 
 
 
Other COBOL Interview Questions
 
  Question Asked @ Answers
 
Hi................... I have records like this aaaa cccc bbbb And i want output like this bbbb cccc aaaa How can it possible ?. Note:Please make sure records are in unsorted order. somebody plzzz help me.   1
created cluster using IDCAMS ..that is empty ..when i write a program for read using Input ..wil it open the cluster or gives any error? HCL 2
How can we find out wether to declare the data items like Integer, Char,Comp? If comp types how can we decide wether it is Comp and Comp3.How it is? Please Explain... Cheers. Syntel 1
Explain the difference between an internal and an external sort, the pros and cons, internal sort syntax etc.   3
input:- 12233344445555566666... output:- 1=1,2=4,3=9... Here firstno i.e 1 should be displayed and after that the alikeno.s should be added n displayed.i.e 2+2=4 like tat it goeson.   1
What is Comm? IBM 2
How to read the last 100 records from a COBOL file. The file contains N number of records. IBM 11
What is CALL statement in COBOL?   4
What is the point of the REPLACING option of a copy statement?   3
db2 variable decimal(15,2) what is the equalent size of cobol variable Syntel 2
what will happen if i give program name and member name as different? program runs successful or w'll abend? CTS 5
How To Separate The Numerics From An Alphanumric Data Item Which Contains Both Alphabates And Numerics ?   4
 
For more COBOL Interview Questions Click Here 
 
 
 
 
 


   
Copyright Policy  |  Terms of Service  |  Articles  |  Site Map  |  RSS Site Map  |  Contact Us
   
Copyright 2013  ALLInterview.com.  All Rights Reserved.

ALLInterview.com   ::  KalAajKal.com