About ABAP

Simply ABAP is Business. It is have some features externally that's way we are called as Advanced Business Application Program Development. I can show only ABAP Program. If you have any doubt about ABAP. send to my email I can search I will tell that to you OK. I giving the suggestion to you guys Before Learning the ABAP You must learn About C. 
                There we have what is a class, structure, interface, methods like that everything you can learn then you can learn ABAP.  

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ABAP First Program Explanation.
*//ABAP is not a case sensitive we can write either small or capital letters.
If you want to write comments you can start with either star or double quotation (").

Declaration variable.
Syntax:
                 Data     <variable name >  type      <standard data type>. "Ending with dot symbol.
Example:
                 Data      Variable1 type I.
                 Data      Variable2 type C.
I, C, String, DATs, Tims, P Decimal 2, N are the  Data types.


Example Program:
"Declaring the variable for Integer, character, String.

Data var1 type I.
Data var2 type C.
Data var3 type String.
"Assigning the value declaration 
var1 =100.
var2 = 'A'    "C means It will take only one character.
var3 = 'SAP-ABAP'.
"Printing for output we are using WRITE key word.

write : var1, var2, var3. " colon(:) means chain related we can use at the same time more variables.