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Introduction to COBOL:
In the year 1959, a new language named the COBOL (COmmon Business Oriented Language) was introduced remembering the business purpose applications.
The board of directorate that is known as CODASYL (Conference on the DATA System Language) COBOL programming language committee established a COBOL maintenance committee to keep COBOL in step during times. The first COBOL compiler became exist in early 1962. The later version with some new additions was published in the year 1965. In August 1968 a standard version of the language was approved by the American National
Standard Institute (ANSI). This standard version was again modified in 1974 and is termed as ANSI-74 COBOL or COBOL -74. The revision process has been continuous and in the year 1985 a revised standard was introduced. This standard was termed as COBOL-85.
ON SIZE ERROR OPTION: Whenever a size error occurs, the contents of the result field after the operation is unpredictable. Though, the processing is not-terminated and the co
PERFORM WITH TIMES OPTION: The format of a PERFORM TIMES statement is as shown below: Illustration: A) Perform the para-2 5 times. In this situation the specifie
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
RELATIVE FILES: The Files that are stored on a direct access storage medium like magnetic disk are frequently known as direct access files. The COBOL supports three different
OPEN statement: We know that the processing of a file should start with the execution of an OPEN statement. The file can be opened in any one of the 4 open modes - INPUT, OUTP
PERFORM WITH UNTIL OPTION: The format is as shown below: Illustration: A) Perform p-3 until i > 5. Here p-3 will be executed whenever i B) Perform p-2 thru
B (Blank Insertion) : The occurrence of a B anyplace in the picture will insert a space character in the edited data. There can be more than one B in the picture. Examples:
calculate simple interest
MERGE VERB WITH OUTPUT PROCEDURE: Like the sort verb, the merge verb can also have an output procedure. The syntax of the MERGE verb is as shown below: The r
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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