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Identification Division:
The Identification Division is the first division of each and every COBOL source program. The paragraph PROGRAM-ID is necessary in most of the machines. The other paragraphs are elective.
The structure of Identification division is shown below:
IDENTIFICATION DIVISION.
PROGRAM-ID. Entry
[AUTHOR. entry.]
[INSTALLATION. entry.]
[DATE-WRITTEN. entry.] Optional
[DATA-COMPILED. entry.]
[SECURITY. entry.]
[REMARKS. entry.]
The division heading and paragraph names must be coded as A margin entries. The entries subsequent the paragraph headings should be terminated by a period. The entry in the PROGRAM-ID paragraph includes the program name to be used to identify the object program.
The entries in the other paragraphs are generally treated as comments and the programmer is free to write whatever thing for these entries. Only significant entries must be included in these places to provide better clarity and documentation.
The entry for the AUTHOR paragraph may include the name of the programmer. The entrance of the DATE-COMPILED paragraph may hold the date of compilation. If this entry is left blank, then the compiler inserts the real date in the listing of the source program which may be printed during the compilation.
ADD and SUBTRACT CORRESPONDING: The CORRESPONDING option can also used with the ADD and SUBTRACT verbs. The following are some of the formats of these verbs with the CORRESPON
Rules of read statements: The next record is identified according to the rules as shown below: (i) Whenever the READ NEXT statement is the initial statement to be executed
Literals: The actual values can too appear in a program. These values are termed as literals. For illustration, the statement MOVE 0 TO TOTAL indicates that the value zero wil
DIVIDE VERB: The aim of the DIVIDE verb is to divide one number by the other and to store the result. There are few forms of this verb. One of its forms is as shown below:
Column and Field in COBOL program: In COBOL there are 2 types of entries termed as margin A and margin B entries. The Margin A entries start from the column 8, 9, 10 or 11 and
PROGRAM TO DEMONSTRATE SORT VERB: The file for which a record having 2 fields, viz., Account Number and Name is already available. Sort the file based on the ascending order o
OCCURS - INDEXED BY PROGRAM: identification division. program- id. searching. environment division. data division. working-storage section. 01 table1. 0
Examples - Edit characters for numeric data: The following illustration illustrates the use of Z editing characters. The character b is used to indicate the space character an
PROGRAM FOR PERFORM - THRU: We have to write a program to elaborate PERFORM ...THRU statement Identification division. Program- id. Perfthru. Environment division.
Example of read statement: Illustration: READ OLD-MASTER AT END MOVE ZERO TO END-OF-RECORDS. As a result of this statement, generally the next record from the OLD-MAST
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