GnuCOBOL Programmer’s Guide

This documentation is published by OCamlPro SAS on our resources page for GnuCOBOL.

Authors:

• Gary L. Cutler (cutlergl@gmail.com).

• For updates Vincent B. Coen (vbcoen@gmail.com).

Documentation

• Copyright
• 1 Introduction
  • 1.1 Additional Reference Sources
  • 1.2 Introducing COBOL
  • 1.3 So What is GnuCOBOL?
• 2 COBOL Fundamentals
  • 2.1 The COBOL Language - The Basics
  • 2.2 Table References
• 3 CDF - Compiler Directing Facility
  • 3.1 >>CALL-CONVENTION
  • 3.2 COPY
  • 3.3 REPLACE
  • 3.4 >>DEFINE
  • 3.5 >>IF
  • 3.6 >>SET
  • 3.7 >>SOURCE
  • 3.8 >>TURN
  • 3.9 >>D
  • 3.10 >>DISPLAY
  • 3.11 >>PAGE
  • 3.12 >>LISTING
  • 3.13 >>LEAP-SECONDS
  • 3.14 $ Directives
• 4 IDENTIFICATION DIVISION
• 5 ENVIRONMENT DIVISION
  • 5.1 CONFIGURATION SECTION
  • 5.2 INPUT-OUTPUT SECTION
• 6 DATA DIVISION
  • 6.1 Data Definition Principles
  • 6.2 FILE SECTION
  • 6.3 WORKING-STORAGE SECTION
  • 6.4 LOCAL-STORAGE SECTION
  • 6.5 LINKAGE SECTION
  • 6.6 REPORT SECTION
  • 6.7 SCREEN SECTION
  • 6.8 Special Data Items
  • 6.9 Data Description Clauses
• 7 PROCEDURE DIVISION
  • 7.1 PROCEDURE DIVISION USING
  • 7.2 PROCEDURE DIVISION CHAINING
  • 7.3 PROCEDURE DIVISION RETURNING
  • 7.4 PROCEDURE DIVISION Sections and Paragraphs
  • 7.5 DECLARATIVES
  • 7.6 Common Clauses on Executable Statements
  • 7.7 Special Registers
  • 7.8 GnuCOBOL Statements
• 8 Functions
  • 8.1 Intrinsic Functions
  • 8.2 Built-In System Subroutines
• 9 Report Writer Usage
  • 9.1 RWCS Lexicon
  • 9.2 The Anatomy of a Report
  • 9.3 The Anatomy of a Report Page
  • 9.4 How RWCS Builds Report Pages
  • 9.5 Control Hierarchy
  • 9.6 An Example
  • 9.7 Control Hierarchy (Revisited)
  • 9.8 Turning PHYSICAL Page Formatting Into LOGICAL Formatting
• 10 Interfacing With The OS
  • 10.1 Compiling Programs
  • 10.2 Running Programs
  • 10.3 Binary Truncation
• 11 Sub-Programming
  • 11.1 Subprogram Types
  • 11.2 Independent vs Contained vs Nested Subprograms
  • 11.3 Alternate Entry Points
  • 11.4 Dynamic vs Static Subprograms
  • 11.5 Subprogram Execution Flow
  • 11.6 Sharing Data Between Calling and Called Programs
  • 11.7 Recursive Subprograms
  • 11.8 Combining GnuCOBOL and C Programs
• 12 Programming Style Suggestions
  • 12.1 Marking Changes in Programs
  • 12.2 Data Item Coding and Naming Conventions
  • 12.3 Table Subscripting versus Table Indexing
  • 12.4 Copybook Naming Conventions and Usage
  • 12.5 PROCEDURE DIVISION Sections Versus Paragraphs
  • 12.6 COMPUTE Versus ADD-SUBTRACT-MULTIPLY-DIVIDE
• 13 Programming for XFD
  • 13.1 GnuCobol use SQL for files
• B Glossary of Terms
• C Reserved Word List
• D Grouped Word Lists by feature and function
  • Common reserved words
  • Extra (obsolete) context sensitive words
  • Internal registers
• E List of Intrinsic Functions
• F System routines
• G System names
  • System names: device
  • System names: feature
  • System names: switch
• H Exceptions
• I GNU Free Documentation License
• J Summary of Document Changes

Indices and tables

• Index

• Module Index