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Using the SORT and MERGE Statements
9.3 Sample Programs Using the SORT and MERGE Statements
Example 9–9 (Cont.) Using the INPUT PROCEDURE and OUTPUT
PROCEDURE Phrases
PROCEDURE DIVISION.
000-START SECTION.
005-DO-THE-SORT.
SORT SORT-FILE ON ASCENDING KEY
S-KEY-1
S-KEY-2
INPUT PROCEDURE IS 010-GET-INPUT
THRU 200-DONE-INPUT-GET
OUTPUT PROCEDURE IS 300-CREATE-OUTPUT-FILE
THRU 600-DONE-CREATE.
********************************************************
* Notice the use of DISPLAY and record counters to *
* produce sort statistics. *
********************************************************
DISPLAY "TOTAL FIRST-FILE RECORDS IS " FILE01-COUNT.
DISPLAY "TOTAL SECOND-FILE RECORDS IS " FILE02-COUNT.
DISPLAY "TOTAL NUMBER OF SORTED RECORDS IS " SORT-COUNT.
DISPLAY "TOTAL NUMBER OF OUTPUT RECORDS IS " OUTPUT-COUNT.
************************************************************
* At this point, you could transfer control to another *
* section of the program and continue processing. *
************************************************************
DISPLAY "END OF PROGRAM SORTC".
STOP RUN.
010-GET-INPUT SECTION.
050-OPEN-FILES.
OPEN INPUT FIRST-FILE.
100-READ-FIRST-FILE.
READ FIRST-FILE AT END
CLOSE FIRST-FILE
OPEN INPUT SECOND-FILE
GO TO 150-READ-SECOND-FILE.
ADD 1 TO FILE01-COUNT.
IF R1-STATUS-CODE = "D"
GO TO 100-READ-FIRST-FILE.
RELEASE SORT-REC FROM RECORD1.
GO TO 100-READ-FIRST-FILE.
150-READ-SECOND-FILE.
READ SECOND-FILE AT END
CLOSE SECOND-FILE
GO TO 200-DONE-INPUT-GET.
ADD 1 TO FILE02-COUNT.
IF R2-STATUS-CODE = "D"
GO TO 150-READ-SECOND-FILE.
RELEASE SORT-REC FROM RECORD2.
GO TO 150-READ-SECOND-FILE.
200-DONE-INPUT-GET SECTION.
250-EXIT-PARAGRAPH.
EXIT.
300-CREATE-OUTPUT-FILE SECTION.
350-OPEN-OUTPUT.
OPEN OUTPUT OUTPUT-FILE.
400-READ-SORT-FILE.
RETURN SORT-FILE AT END
PERFORM 500-WRITE-THE-OUTPUT
CLOSE OUTPUT-FILE
GO TO 600-DONE-CREATE.
ADD 1 TO SORT-COUNT.
IF INITIAL-SORT-READ = "Y"
MOVE SORT-REC TO SAVE-SORT-REC
(continued on next page)
Using the SORT and MERGE Statements 9–15