Program Structure

Synopsis

The schema below shows how a COBOL program is structured. For simplifying access to information, it has been split into smaller parts.

[{IDENTIFICATION} DIVISION. ]   {ID            }     { {PROGRAM-ID }. Program-Name [ IS {INITIAL } PROGRAM ] .     {FUNCTION-ID}                    {RESIDENT}         [ AUTHOR. [Comment-Entry .] ]         [ INSTALLATION. [Comment-Entry .] ]         [ DATE-WRITTEN. [Comment-Entry .] ]         [ DATE-COMPILED. [Comment-Entry .] ]         [ SECURITY. [Comment-Entry .] ]         [ REMARKS. [Comment-Entry .] ]         [ ENVIRONMENT DIVISION. ]         [ DATA DIVISION. ]         PROCEDURE DIVISION         [ END PROGRAM. ]                                              }       { CLASS-ID. Class-Name [ AS Literal ]                              [ INHERITS FROM Class-Name ]                              [ IMPLEMENTS { Interface-Name } ... ] .          [ AUTHOR. Comment-Entry . ]         [ INSTALLATION. Comment-Entry . ]

[ DATE-WRITTEN. Comment-Entry . ]         [ DATE-COMPILED. Comment-Entry . ]         [ AUTHOR. Comment-Entry . ]         [ INSTALLATION. Comment-Entry . ]         [ DATE-WRITTEN. Comment-Entry . ]         [ DATE-COMPILED. Comment-Entry . ]         [ SECURITY. Comment-Entry . ]         [ REMARKS. Comment-Entry . ]         [ ENVIRONMENT DIVISION. ]         [ {IDENTIFICATION} DIVISION.         {ID            }           FACTORY.             [ ENVIRONMENT DIVISION. ]             [ DATA DIVISION. ]             [ PROCEDURE DIVISION.               [ {IDENTIFICATION} DIVISION.               {ID            }                 METHOD-ID. Method-Name [ AS Literal ] [ IS {PUBLIC   } ] [ OVERRIDE ].                                                          {PRIVATE  }                                                          {PROTECTED}                   [ ENVIRONMENT DIVISION. ]                   [ DATA DIVISION. ]                   PROCEDURE DIVISION                   END METHOD. ] ... ]             END FACTORY. ]         [ {IDENTIFICATION} DIVISION.         {ID            }           OBJECT.             [ ENVIRONMENT DIVISION. ]             [ DATA DIVISION. ]

[ PROCEDURE DIVISION.               [ {IDENTIFICATION} DIVISION.               {ID            }                 METHOD-ID. Method-Name [ AS Literal ] [ IS {PUBLIC   } ] [ OVERRIDE ].                                                          {PRIVATE  }                                                          {PROTECTED}                   [ ENVIRONMENT DIVISION. ]                   [ DATA DIVISION. ]                   PROCEDURE DIVISION                   END METHOD. ] ... ]             END OBJECT. ]

Syntax rules

1.	Program-Name is a User-defined word, as defined in the Definitions section in the Preface of this document.

2.	Each reference to Comment-Entry is a Comment-Entry, as defined in the Definitions section in the Preface of this document.

3.	Each reference to Class-Name is a User-defined word, as defined in the Definitions section in the Preface of this document.

4.	Interface-Name is a User-defined word, as defined in the Definitions section in the Preface of this document.

5.	Each reference to Method-Name is a User-defined word, as defined in the Definitions section in the Preface of this document.

6.	Each reference to Literal is a Nonnumeric Literal, as defined in the Definitions section in the Preface of this document.

General rules

1.	PROGRAM-ID (or its synonymous FUNCTION-ID) and CLASS-ID cannot appear together in the same program.