Basic ABAP Syntax

ABAP (Advanced Business Application Programming) is a programming language used in SAP for developing applications. Below is a summary of some basic syntax elements in ABAP.

Comments

Single-line comment:
```
* This is a single-line comment.
```
Multi-line comment:
```
" This is a
" multi-line comment.
```

Data Types

Defining a variable:
```
DATA: variable_name TYPE data_type.
```
Example:
```
DATA: lv_name TYPE string.
```

Control Structures

IF Statement:

IF condition.
    " code to execute
ELSEIF another_condition.
    " code to execute
ELSE.
    " code to execute
ENDIF.

CASE Statement:

CASE variable.
    WHEN value1.
        " code to execute
    WHEN value2.
        " code to execute
    WHEN OTHERS.
        " code to execute
ENDCASE.

Looping

DO Loop:

DO n TIMES.
    " code to execute
ENDDO.

WHILE Loop:

WHILE condition.
    " code to execute
ENDWHILE.

Subroutines

FORM:

FORM subroutine_name.
    " code to execute
ENDFORM.

Function Modules

Calling a function module:

CALL FUNCTION 'FUNCTION_NAME'
  EXPORTING
    parameter1 = value1
    parameter2 = value2
  IMPORTING
    return_value = variable
  EXCEPTIONS
    exception1 = 1
    exception2 = 2
    OTHERS = 3.

Example Program

REPORT z_example.

DATA: lv_text TYPE string.

lv_text = 'Hello, ABAP!'.

WRITE: / lv_text.

Conclusion

This cheat sheet covers the basics of ABAP syntax. For more detailed and advanced topics, refer to official SAP documentation or specific tutorials.

Data types