How to use the struct "Goto"... on ABAP ?

Question

Hi Experts!
As our knew, in program code VB, we usually to use struct GOTO that move point of command, when condition is right or no. Such as :
Dim lngFactorial As Long
Dim intInputNbr As Integer
Dim intLoopCtr As Integer
intInputNbr = Val(InputBox("Enter a number:", "GoTo Demo"))
lngFactorial = 1
intLoopCtr = 1
Loop_Start:
   If intLoopCtr > intInputNbr Then GoTo 10
   lngFactorial = lngFactorial * intLoopCtr
   intLoopCtr = intLoopCtr + 1
GoTo Loop_Start
10 ' End of loop
Print CStr(intInputNbr); "! = "; lngFactorial
-> And now, How I can use it in ABAP. Any way, could you show me the struct about transaction - comic transaction, when we do some job at the same time. Thanks so much.

Answer 1

Hi,
There are two statements in ABAP for this purpose.
1. CONTINUE
2. CHECK
If you are using a condition inside the loop and want to go to the LOOP statement without further processing, you can use
loop at itab into wa.
if <your condition>.
CONTINUE.                       "If the condition is true, this statement will take you to the statement 'LOOP AT ITAB INTO WA'
endif.
statement 1.....
statement 2.....
statement2.....
endloop.
Using Check:
loop at itab into wa.
CHECK <your condition>.             "If the condition is true, this statement will take you to the statement 'LOOP AT ITAB INTO WA'
statement 1.....
statement 2.....
statement2.....
endloop.
WHEN CONTINUE OR CHECK EXECUTES, statements 1, 2, 3.... will be skipped and the program continues from LOOP statement with the next record of internal table.
Regards,
Jayesh
Edited by: Jayesh Gupta on Mar 31, 2010 11:19 AM