Input-output section - cobol programming, COBOL Programming

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INPUT-OUTPUT SECTION:

This section holds information regarding the files to be used in the program. There are 2 paragraphs in this section- FILE-CONTROL & I-O-CONTROL.

The FILE-CONTROL is used almost in every program. Below are some of the entries of the FILE-CONTROL paragraph. The Input-Output section is elective in many computers.

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Illustration of simple sort verb: Illustration: Suppose that we have a card file with the following records description in the data division. The names of the work fil

Label record and value of clause, LABEL RECORD CLAUSE: This clause spe...

LABEL RECORD CLAUSE: This clause specifies whether or not the standard header and trailer labels must be present in the magnetic-tape files. VALUE OF CLAUSE: The VAL

Illustration of renames clause, Illustration of Renames clause: In the...

Illustration of Renames clause: In the illustration, PAT-OTHER-THAN-BASIC will become a fresh group consisting of DEARNESS-ALLOWANCE, HOUSE-RENT & MTHLY-INCENTIVE. Keep in min

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OCCURS CLAUSE - PROGRAM: We have to write a program to elaborate occurs clause. Get names and marks of the students and show them on the screen. identification division.

Data record clause - and code-set clause, DATA RECORD CLAUSE: The DATA...

DATA RECORD CLAUSE: The DATA RECORD clause, documents the record names defined for the file. For illustration, DATA RECORDS ARE REC-1, REC-2, REC-3 that means there are 3diffe

Procedure division statements for the indexed files, PROCEDURE DIVISION sta...

PROCEDURE DIVISION statements for the indexed files: All the statements which are available for a relative file are also available for an indexed file. READ STTATEMENT :

Write statement - relative files, WRITE Statement: The WRITE stat...

WRITE Statement: The WRITE statement for a relative file has the format which is as shown below. WRITE record-name [ FORM identifier ]

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File status clause, FILE STATUS clause: This clause has been involved ...

FILE STATUS clause: This clause has been involved in the above syntax for completeness. The ORGANIZATION, REVERSE, ACCESS and STATUS clause can be specified in any order.

File updation, FILE UPDATION: The method of modifying an old file with...

FILE UPDATION: The method of modifying an old file with present information is termed as file updating. Master file: A master file is a file which is used as an author

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