COBOL is one of the oldest programming languages which is an acronym for COmmon Business-Oriented Language, defining its primary domain in business, finance, and administrative systems for companies and governments.
The COBOL 2002 standard comprises support for object-oriented programming and other modern language features. The language continues to evolve today. In the early 1990s it was decided to add object-orientation in the next full revision of COBOL. The initial estimate was to have this revision completed by 1997 and an ISO CD (Committee Draft) was available by 1997. Some implementers (including Micro Focus, Fujitsu, Veryant, and IBM) introduced object-oriented syntax based on the 1997 or other drafts of the full revision. The final approved ISO standard (adopted as an ANSI standard by INCITS) was approved and made available in 2002.
The 2002 (4th revision) of COBOL included many other features beyond object-orientation. These included (but are not limited to):
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Basic example of COBOL programming is as follows :
Example program demonstrating how to create a sequential file from data input by the user. -------------
$ SET SOURCEFORMAT"FREE"
AUTHOR. Michael Coughlan.
* Example program showing how to create a sequential file
* using the ACCEPT and the WRITE verbs.
* Note: In this version of COBOL pressing the Carriage Return (CR)
* without entering any data results in StudentDetails being filled
* with spaces.
SELECT StudentFile ASSIGN TO "STUDENTS.DAT"
ORGANIZATION IS LINE SEQUENTIAL.
02 StudentId PIC 9(7).
03 Surname PIC X(8).
03 Initials PIC XX.
03 YOBirth PIC 9(4).
03 MOBirth PIC 9(2).
03 DOBirth PIC 9(2).
02 CourseCode PIC X(4).
02 Gender PIC X.
OPEN OUTPUT StudentFile
DISPLAY "Enter student details using template below. Enter no data to end."
PERFORM UNTIL StudentDetails = SPACES
DISPLAY "Enter - StudId, Surname, Initials, YOB, MOB, DOB, Course, Gender"
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