以ZTEST29的flow logic为例,!符号代表区分系统变量名称和自定义的名称。
F1中查看!可以看到示例:
FORM test USING !CHANGING
ENDFORM.
附:ZTEST29
*&---------------------------------------------------------------------*
*&
*&---------------------------------------------------------------------*
*&
*&
*&---------------------------------------------------------------------*
ztest29.
DATAsbook.
DATAsbook.
.
<fs>.
blk1.
ekko-zywlx.
blk1.
INITIALIZATION.
'S'.
.
'S'.
.
'S'.
START-OF-SELECTION.
'S'.
action.
p_test.
'S'.
END-OF-SELECTION.
'S'.
action.
ROWS
sbook
gt_sbook.
-'001'.
-.
<fs>.
gs_sbook.
WRITE:
-carrid,
-passname.
ENDLOOP.
ENDFORM.