SAP Hello World Program And Basic Fundamentals

SAP Typical Architecture

How to write a programm in sap?

Use the SE38 transaction code.
SE38 - Tools -> ABAP Workbench -> Development -> ABAP Editor 

Create a program name with Z or Y - Example - ZTFOUR
Subobject - Sourcecode

Titile - Hello World

Attribute 
Types - Executable Program

SAVE

Create Object Directory Entry

Local Object


"------Program Code----"

REPORT  ZTFOUR.

DATA: VAR(50).

VAR = ‘Hello World’.

write: var.