How do you read next record in COBOL?

How do you read next record in COBOL?

Summary – READ NEXT statement used to read the next records from the current reading position of the file. Only one record can be read from the file. The file must be opened in INPUT or I-O mode to perform the READ NEXT statement.

How do I read end of file in COBOL?

PROCEDURE DIVISION. OPEN INPUT STUDENT. PERFORM UNTIL WS-EOF=’Y’ READ STUDENT INTO WS-STUDENT AT END MOVE ‘Y’ TO WS-EOF NOT AT END DISPLAY WS-STUDENT END-READ END-PERFORM. CLOSE STUDENT.

How do you skip a record while reading in COBOL?

OPEN INPUT STUDENTS-FILE-IN OPEN OUTPUT STUDENTS-FILE-OUT ACCEPT WS-DATE FROM DATE MOVE RUN-MONTH TO MONTH-NOW MOVE RUN-DAY TO DAY-NOW MOVE RUN-YEAR TO YEAR-NOW PERFORM 300-WRITE-HEADINGS PERFORM UNTIL ARE-THERE-MORE-RECORDS = ‘NO ‘ READ STUDENTS-FILE-IN AT END MOVE ‘NO ‘ TO ARE-THERE-MORE-RECORDS NOT AT END PERFORM …

What is EOF in COBOL?

When COBOL attempts to read the second record, EOF-FOUND will be set and no record is returned since the end of the file is reached. End of file is never set if a record is returned — only after the last record is read and another read attempt is made will the end of file condition apply.

How do you READ the last record in VSAM in COBOL?

How to Read a VSAM file from last record to first

1. Simply MOVE HIGH-VALUES to the RIDFLD.
2. Do a Start Browse first. Then issue a READPREV which reads the HIGH-VALUES record.
3. Issue another READPREV which actually reads the last record of the file. From that record on wards continue reading the file in reverse order.

What is extend mode in COBOL?

Extend – To append records in a sequential file extend mode is used, i.e records are inserted at the end. This mode cannot be used when the file access mode is Random or Dynamic. 4. I-O – Input-Output mode provides read and rewrite the record of a file.

What is end of file condition?

In computing, end-of-file (EOF) is a condition in a computer operating system where no more data can be read from a data source. The data source is usually called a file or stream.

How do you write an alternate record in Cobol?

Re: Read a flat file and write alternate records into anothe

1. 01 FILLER. 05 FILLER PIC X. 88 LAST-RECORD-WRITTEN VALUE “Y”. 88 LAST-RECORD-NOT-WRITTEN. VALUE “N”.
2. SET LAST-RECORD-NOT-WRITTEN TO TRUE.
3. IF LAST-RECORD-WRITTEN. SET LAST-RECORD-NOT-WRITTEN. TO TRUE. ELSE. PERFORM WRITE-OUT-THE-INPUT. SET LAST-RECORD-WRITTEN TO TRUE.

How do you skip a record in JCL?

STOPAFT SKIPREC condition in SORT JCL

1. The STOPAFT option allows you to specify the maximum number of records to be accepted for sorting or copying.
2. The SKIPREC option allows you to skip records at the beginning of the input file and sort or copy only the remaining records.

What is FD in COBOL?

In a COBOL program the file description entry (FD) represents the highest level of organization in the File Section. The FILE SECTION header is followed by a file description entry consisting of a level indicator (FD), a file-name and a series of independent clauses.

How do you read first and last record in Cobol?

PROCEDURE DIVISION. 100-READ-FILE. OPEN I-O MASTER-FILE. PERFORM UNTIL WS-EOF = “Y” READ MASTER-FILE AT END MOVE ‘Y’ TO WS-EOF NOT AT END DISPLAY IN-RECORDS END-READ END-PERFORM CLOSE MASTER-FILE.

How do you read the last record in a sequential file?

It’s not possible to read the last record directly in sequential file. we will add a sequence number at the end of the record and sort the sequence numbers on descending order and get the first record of output that will be the last record of sequential file.

What is file status 92 in COBOL?

The 92 file status code (LOGIC ERROR) indicates you’re attempting to read a NEXT record without having established a current record to read the next record after.

How do I return to EOF?

1. EOF. EOF stands for End of File. The function getc() returns EOF, on success..
2. getc() It reads a single character from the input and return an integer value. If it fails, it returns EOF.
3. feof() The function feof() is used to check the end of file after EOF. It tests the end of file indicator.

How do you handle end-of-file?

The End of the File (EOF) indicates the end of input. After we enter the text, if we press ctrl+Z, the text terminates i.e. it indicates the file reached end nothing to read.

Can we rewrite sequential file in Cobol?

The REWRITE statement is not supported for line-sequential files. Must be the name of a logical record in a data division FD entry. The record-name can be qualified.

What is after advancing page in Cobol?

AFTER ADVANCING PAGE means that the line will be written after advancing to the top of a new page. Second, we want to leave a blank line between the PAGE-HDR and the COLUMN-HDR. This can be accomplished by using AFTER ADVANCING 2 LINES which moves the printer down two lines and writes on the second line.

How do I skip header records in sort?

The logic is again in two ways:

1. Method-1. Use IDCAMS utility skip header record and trailer record.
2. IDCAMS Skip record code snippet: // EXEC PGM=IDCAMS. //SYSPRINT DD SYSOUT=A. //SYSIN DD * Skip(1)count(48) /*
3. Method-2.
4. Code snippet to reformat input record in sort JCL.

What is the use of Icetool in JCL?

ICETOOL is a multi-purpose DFSORT utility used to perform a variety of operations on datasets. Input and output datasets can be defined using user defined DD names. The file operations are specified in the TOOLIN DD statement. Additional conditions can be specified in user defined ‘CTL’ DD statements.

What is recording mode F in COBOL?

RECORDING MODE IS {F/V/U}

‘RECORDING MODE’ we use this to describe the format of the logical records of the file. This means that the logical record of the file is of a fixed length, hence all the records in the file will occupy a fixed length which is provided in a COBOL program or in JCL.

What is PIC clause in COBOL?

Picture Clause. Picture clause is used to define the following items − Data type can be numeric, alphabetic, or alphanumeric. Numeric type consists of only digits 0 to 9. Alphabetic type consists of letters A to Z and spaces.

How do you READ the last record in a sequential file?

How do you READ first and last record in COBOL?

What is status 39 VSAM?

VSAM file status code 39 occurs due to either-
The Unsuccessful opening of a file due to the conflicting attributes of the file. Wrong value in DCB which is not matching the file attributes in the Program.

What is file status 46 Cobol?

If a second sequential read is unsuccessful, a file status of 46 occurs and the AT END phrase is not executed.” When an AT END condition occurs, the READ is considered unsuccessful. This causes unpredictable results. The cause is the record contents returned to the program are UNDEFINED.