cobol/account.cbl

       IDENTIFICATION DIVISION.
       PROGRAM-ID. ACCOUNT-MGMT.
       DATA DIVISION.
       WORKING-STORAGE SECTION.
       01 ACCOUNT-NUMBER        PIC 9(4).
       01 CUSTOMER-NAME         PIC X(20).
       01 BALANCE               PIC 9(6)V99.
       01 EOF                   PIC X VALUE 'N'.

       FILE SECTION.
       FD ACCOUNT-FILE
           LABEL RECORDS ARE STANDARD
           VALUE OF FILE-ID IS "data/accounts.dat".
       01 ACCOUNT-RECORD.
           02 ACCT-NUM          PIC 9(4).
           02 FILLER            PIC X(4).
           02 NAME              PIC X(20).
           02 FILLER            PIC X(6).
           02 AMOUNT            PIC 9(6)V99.

       PROCEDURE DIVISION.
       MAIN-LOGIC.
           OPEN INPUT ACCOUNT-FILE
           ACCEPT ACCOUNT-NUMBER
           PERFORM UNTIL EOF = 'Y'
               READ ACCOUNT-FILE INTO ACCOUNT-RECORD
                   AT END MOVE 'Y' TO EOF
                   NOT AT END
                       IF ACCT-NUM = ACCOUNT-NUMBER
                           DISPLAY "Account Number: ", ACCT-NUM
                           DISPLAY "Name: ", NAME
                           DISPLAY "Balance: $", AMOUNT
                       END-IF
               END-READ
           END-PERFORM
           CLOSE ACCOUNT-FILE
           STOP RUN.