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Cobol
Introduction to Cobol Programming
Cobol Basics
Cobol Divisions
The Identification Division
The Environment Division
Data Division
Procedure Division
Defining Data Part 1
Number Formats
Moving and Editing Data
Initializing Data
Defining Data Part 2
Printing and Writing Data
Tables
Boolean Data
HIGH-VALUES and LOW-VALUES
Commands and Logics
Accept and Display
Move
Perform
Cobol IF... THEN...ELSE...
Conditions
Cobol Evaluate
Cobol Strings
Cobol Write
Scope Terminators
File Handling
Reading and Writing
REWRITE, DELETE, and EXTEND
SORT and MERGE
Input and Output Procedure
FILE STATUS (error handling)
Debugging COBOL Code

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Introduction to Cobol Programming


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COBOL is a third-generation programming language, and one of the oldest programming languages still in active use. Its name 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 includes support for object-oriented programming and other modern language features.

A D V E R T I S E M E N T

COBOL programs are in use globally in governmental and military agencies, in commercial enterprises, and on operating systems such as IBM's z/OS, Microsoft's Windows, and the Unix/Linux families. In the late 1990s, the Gartner Group, a data-processing industry research organization, estimated that of the 300 billion lines of computer code that existed, eighty percent or 240 billion lines were COBOL. They also reported that more than half of all new mission-critical applications were still being created using COBOL an estimated 5,000,000,000 net new lines of COBOL code annually.

Near the end of the twentieth century the year 2000 problem was the focus of significant COBOL programming effort, sometimes by the same programmers who had designed the systems decades before. The particular level of effort required for COBOL code has been attributed both to the large amount of business-oriented COBOL, as COBOL is by design a business language and business applications use dates heavily, and to constructs of the COBOL language such as the PICTURE clause, which can be used to define fixed-length numeric fields, including two-digit fields for years.


       

Introduction

The aim of the ZingCOBOL is to give the basics of the COBOL programming language for anyone who knows a little bit about computers (not much) and preferably will at least have come across another procedural progamming language such as C, BASIC or Pascal. If you want to learn good structured programming then, although the basic COBOL syntax is provided here, other sources can provide more effective guidance.

The floating SITE MENU button can be clicked to bring up a temporary menu for navigating this site. If your browser doesn't support this feature (or the popup window that results) there is a table of contents at the bottom of every page to navigate with.

If you wish to find a specific item the page should take you to the desired section. This tutorial is by no means extensive but the basics should be covered here.

What's written here will hopefully be correct (tell me otherwise) and maybe even informative. However, I would strongly recommend buying a good book on COBOL programming, and/or have someone teach you it.

If you have any queries, comments, or suggestions you can either go to the zingCOBOL Forum (all levels of ability are welcome), use the Feedback form and/or sign the Guestbook.

I hope ZingCOBOL will prove useful to you.

 

COBOL - a brief overview

COBOL (COmmon Business Orientated Language) has been around for yonks (since 1959), updated in 1968, 1977 and 1985. OO COBOL was developed in the 1990's. Well suited  to business applications, i.e. used for  large batch processes running on mini-computer and mainframes (medium to large platforms). About 65% of new critical applications use COBOL; several billion lines of COBOL code exist throughout the world, used by over a million companies. So it may be old but it remains one of the most important languages in commercial use today. (source: Computer Weekly, Dec 9th, 1999).

What you'll need

The best way to learn to programme/learn a new language is to actually be able to write code and run it on a computer. Consequently, you really need a computer (probably a PC), a text editor (Notepad or WordPad will do) to write the code into, and most importantly, a COBOL compiler which will check your code and then convert it into something the computer can understand and execute. I use the Fujitsu COBOL85 ver3.0 compiler which can be downloaded for free.

 



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Keywords: Cobol Basics, cobol programming language, cobol language programming tutorial pdf, history of cobol programming, basic cobol programming, syntax use in cobol programming, cobol programming software download, cobol programming code, learn cobol programming, cobol performs syntax, cobol 2008

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