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can we read records in a file from botom to top. if
possible how can we read
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Answer / ch. ranveer singh gurjar
New update..by Ch. Ranveer Singh(ACS A XEROX)
WE CAN TAKE INPUT AND OUT PUT FILE
AS
INPUT-
10
20
30
OUTPUT-
30
20
10
USE THIS PROGRAM
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-COUN
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / sreejith
yes it is possible by using access mode dynamic.
use START command to point last record.then start reading
using READ PREVIOUS command until first record
| Is This Answer Correct ? | 3 Yes | 12 No |
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