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1.Write code to read the records from a file and load an
array of size 99? Make sure that you take care of all the
error conditions?
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Answer Posted / sachin
IDENTIFICATION DIVISION.
PROGRAM-ID.PGM1.
ENVIRONMENT DEVISION.
INPUT-OUTPUT SECTION.
FILE-CONTROL.
SELECT FILE1 ASSIGN TO DD1
FILE STATUS IS FS1.
DATA DIVISION.
FILE-SECTION.
FD FILE1.
RECORDING MODE IS FB.
LABLES ARE STANDARD.
01 WS-INPUT PIC X(80).
WORKING-STORAGE SECTION.
01 WS-ARRAY.
02 WS-NAME OCCURS 99 TIMES.
01 SWITCHES.
02 WS-EOF-SWITCH PIC X(1)
88 WS-EOF VALUE 'Y'
88 WS-NOT-EOF VALUE 'N'
PROCEDURE DIVISION.
MAIN-PARA.
PERFORM 1000-INITIALIZATION THRU 1000-EXIT.
PERFORM 2000-READ-FILE1 THRU 2000-EXIT
UNTIL WS-EOF.
PERFORM 3000-MAIN-PROCESS THRU 3000-EXIT
STOP RUN.
1000-INITIALIZATION.
INITIALIZE VARIABLES.
OPEN INPUT FILE1.
1000-EXIT
EXIT.
2000-READ-FILE.
READ FILE AT END MOVE 'Y' TO WS-EOF-SWITCH
NOT AT END
CONTINUE
END-READ.
2000-EXIT.
EXIT.
3000-MAIN-PROCESS.
PERFORM VARYING I FROM 1 BY UNTIL WS-EOF
MOVE INPUT-REC TO WS-ARRAY(I)
PERFORM 2000-FILE-READ THRU 2000-EXIT
END-READ.
3000-EXIT.
EXIT.
4000-CLOSE-PARA.
CLOSE FILE1.
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RETRIVING DELETED RECORDS :- I'm frequently asked how to retrieve deleted records from an unjournaled physical file when the deleted records have not yet been removed from the file. Utility UNDEL lets you undelete records in a physical file. This public domain program is available in CISC and RISC versions, and the complete source code is available for download at: UNDEL for AS/400 Save File (RISC): http://www.as400network.com/sharewarefiles/undelris.zip UNDEL for AS/400 Save File (CISC): http://www.as400network.com/sharewarefiles/undel.zip UNDEL for AS/400 Save File (Source code): http://www.as400network.com/sharewarefiles/undelsrc.zip The utility takes advantage of the fact that deleted records in physical files are only flagged as deleted, and the record data still exists until it is overwritten or the file is reorganized with a utility such as RGZPFM. UNDEL simply reads the deleted record, then reuses the record by writing over it with the new record (thus eliminating the flag for the deleted record). Some homegrown and commercial utilities copy the file containing undeleted records to a save file, then use a program to read the save file, which contains live and undeleted records, to a file to undelete the records. The UNDEL utility is superior to the SAVF technique because there's no need to copy the file to a save file, which is especially important for really large files. When run, UNDEL displays the physical file records in their unformatted, raw text form. You can either position the display to a given relative record number or use F19 or F20 to find the previous and next deleted record, respectively. The utility also includes online help, which is almost unheard of for free utilities. Other utilities include the ability to undelete records. You can use the RTVDLTRCD command in the old QUSRTOOL (no longer supported by IBM). QUSRTOOL is now a commercial product called TAA Productivity Tools ( http://www.taatool.com ). The free file editor WRKDBF has a built-in undelete capability ( http://www.wrkdbf.com ), and several commercial file editors can undelete records. For a complete list of file editors, go to http://www.sourcebook400.com, select "Programmer Tools" under "Product Category," then select "File Editors."
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Q:HI friends accually ihave one problem plesase let me know the alternate code of this code. Related field description of code: Add a field, CALvsPRD, "Calendar Day Starts Before/After Production Day" to the parameter set WRKORDER which accepts values 'A' or 'B' o B = Calendar Day Starts Before Production Day o A = Calendar Day Starts After Production Day o Any other value indicates the production and calendar dates are always the same. code: Automatic Execution Of *INZSR Subroutine /Z01 * retrieves WRKORDER field values. /Z01 * Calculate default Production Date and return it to caller. /Z01 * Production date defaults to system date /Z01 C Eval P@Pdate = %DATE() /Z01 * unless Calendar date starts Before PDN(production) date and /Z01 * system time is before PDN Start Time then /Z01 * PDN date is yesterday. /Z01 C If W@CALvsPRD = 'B' and /Z01 C %TIME() < %TIME (W@Strtime) /Z01 C Eval P@Pdate -= %Day(1) /Z01 * unless Calendar date starts After PDN date and /Z01 * system time is *GE PDN(production) Start Time then /Z01 * PDN date is tomorrow. /Z01 C ElseIf W@CALvsPRD = 'A' and W@Strtime > *Zero and /Z01 C %TIME() >= %TIME (W@STrtime) /Z01 C Eval P@Pdate += %Day(1) /Z01 C EndIf /Z01 C Eval *InLr = *On
