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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File description for the relative and indexed files, File Description for t...

File Description for the Relative and Indexed Files: The FD entry for a relative or an indexed file is similar to that of a sequential file. Some compilers do not permit varia

Example of class condition, Example of Class condition: Let the BASIC-...

Example of Class condition: Let the BASIC-PAY be a data name in the card record defined with picture 9(5) V99. By reading the card we can test the value of the BASIC-PAY to ma

Relational condition - cobol programming, RELATIONAL CONDITION: We ...

RELATIONAL CONDITION: We know that a relational condition specifies a comparison between two operands and has the form. Operand-1 relational-operator operand-2

Comparison of nonnumeric operands - relational condition, Comparison of Non...

Comparison of Nonnumeric Operands: A nonnumeric operand can be compared to the other nonnumeric operand according to the rules as shown below: (i) Fields of Equal Sizes:

File-control paragraph for the relative files, FILE-CONTROL paragraph for t...

FILE-CONTROL paragraph for the relative files: The normal format for the SELECT clause for a relative file is as shown below. SELECT file-name ASSIGN TO implementor-nam

Program using occurs clause, PROGRAM USING OCCURS CLAUSE: We have to w...

PROGRAM USING OCCURS CLAUSE: We have to write a simple program to demonstrate Occurs Clause. Get the employee details for 3 persons and compute the total salary. identifica

Example of sign condition , Example of Sign condition: The illustratio...

Example of Sign condition: The illustration below describes the use of the sign condition. Illustration: 77 BALANCE PIC S9 (6) V99. . . I

Record description for the variable-length records, Record Description for ...

Record Description for the Variable-length Records: When the variable- length records consists of records of various lengths, each record type is to be explained at level 01 f

Program of occurs clause, OCCURS CLAUSE - PROGRAM: We have to write a ...

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.

Common form of the read statements, Common form of the READ statements: ...

Common form of the READ statements: Format 1 is the common form of the READ statements. Format 2 is used when the access mode is either random or dynamic. For illustration,

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