Scenario - Opening a file in OUTPUT mode and writing a new record into a new PS file.

Code -

----+----1----+----2----+----3----+----4----+----5----+
       IDENTIFICATION DIVISION.
       PROGRAM-ID. FILEWRIT.
	   AUTHOR. MTH.

       ENVIRONMENT DIVISION. 
       INPUT-OUTPUT SECTION.
       FILE-CONTROL.
           SELECT EMPFILE ASSIGN TO INPUT01
           ORGANIZATION IS SEQUENTIAL 
           ACCESS MODE  IS SEQUENTIAL 
           FILE STATUS  IS WS-FS1.

       DATA DIVISION.
       FILE SECTION.
       FD EMPFILE
           RECORD CONTAINS 80  CHARACTERS 
           BLOCK  CONTAINS 800 CHARACTERS
           DATA RECORD     IS EMPFILE-RECORD.

       01 EMPFILE-RECORD.
          05 EMP-ID        PIC X(05).
          05 EMP-NAME      PIC X(15).
          05 EMP-DESG      PIC X(10).
          05 EMP-SALARY    PIC 9(10).
          05 FILLER        PIC X(40) VALUE SPACES.

       WORKING-STORAGE SECTION.
       01 WS-VAR.
          05 WS-FS1        PIC 9(02).
          05 WS-EOF-SW     PIC X(01).
             88 WS-EOF               VALUE 'Y'.
             88 WS-NOT-EOF           VALUE 'N'.

       PROCEDURE DIVISION. 
      * Opening the file for writing
           OPEN OUTPUT EMPFILE.

           INITIALIZE EMPFILE-RECORD
      * Receiving all the information of the record 
           ACCEPT EMP-ID.
           ACCEPT EMP-NAME.
           ACCEPT EMP-DESG.
           ACCEPT EMP-SALARY.
      * Writing record into file and validation 
           WRITE EMPFILE-RECORD.
           IF WS-FS1 EQUAL ZERO
              DISPLAY "RECORD INSERTED"
           ELSE
              DISPLAY "RECORD INSERTION FAILED"
           END-IF.
      * Closing file
           CLOSE EMPFILE.
		   
           STOP RUN.

Run JCL -

//MATESYF JOB MSGLEVEL=(1,1),NOTIFY=&SYSUID
//*
//STEP01  EXEC PGM=FILEWRIT 
//STEPLIB  DD  DSN=MATESY.COBOL.LOADLIB,DISP=SHR
//INPUT01  DD  DSN=MATESY.EMPLOYEE.INPFILE1,
//             DISP=(NEW,CATLG,DELETE),
//             SPACE=(TRK,(1,1),RLSE),
//             UNIT=SYSDA,
//             DCB=(DSORG=PS,RECFM=FB,LRECL=80,BLKSIZE=800)
//SYSOUT   DD  SYSOUT=*
//SYSIN    DD  * 
E0006
EMPLOYEE6 
SE 
0000040000
/*

Output -

RECORD INSERTED   

MATESY.EMPLOYEE.INPFILE1 -

E0006EMPLOYEE6      SE        0000040000

Explaining Example -

In the above example:

• MATESY.EMPLOYEE.INPFILE1 is a new file created during runtime of the program.
• File should open in OUTPUT mode to write the record into the file.
• The new record inserted into the file as a first record of the file.

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