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Format for COBOL Programs:
The COBOL is a high-level language. Therefore, a COBOL program can be executed on a computer for which a COBOL compiler exists. The compiler translates the COBOL source program into the machine language object program. The object program is really executed.
The COBOL programs are written in the coding sheets. There are 80 columns in a line of a coding sheet. The page number is coded in the columns 1-3 and the line numbers are coded in columns 4-6. The page and line numbers mutually termed as the sequence number. Based on the type, the entries are coded both from the column 8 or column 12 and in both cases it can be continued up to column 72. The Columns 73-80 can be used to write some identification. The compiler ignores anything which is given in columns 73-80 except when a printed copy of the program is given by the compiler in that case the entries in columns 73-80 are also listed. The use of sequence number is optional and can be omitted. Though, when sequence numbers are given they must appear in the ascending order.
Column Field
1-3 Page Number
4-6 Line Number (1-6 Sequence Number)
7 Continuation / Comment
8-11 A - Margin / Area A
12-72 B- Margin /Area B
73-80 Identification
Data Names and Identifiers: The Data name provides reference to the storage space in the memory where the real value is stored. This value takes part in the operation whene
COMPOUND CONDITION: The two simple conditions can be connected by the logical operators AND or OR to form a compound condition (also termed as combined condition). When two co
LEVEL NUMBERS: The COBOL makes use of the level number concept to explain the hierarchical data structure. A level number is a 2 digit number. The permitted level numbers a
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Plus Sign - edit characters for numeric data: + (Plus Sign) : A plus sign is alike to minus sign except that when the item is positive, +sign will be inserted rather th
PROGRAM FOR SCREEN SECTION: identification division. program- id. environment division. data division. working-storage section. 01 a pic 9(2) value
RULES FOR INDEXED TABLES: The rules of indexing a table with an INDEXED phrase are as shown below: (1) If indexing is completed for any one level of a table, then indexing
SIGN CONDITION: The sign condition establishes whether or not the algebraic value of an operand is negative, positive or zero. The operand can be either the numeric identif
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 :
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