ABAP-递归的简单例子 

 1 *求一个数的阶层
 2 REPORT y4_b4_test21.
 3 
 4 DATA:n TYPE i .
 5 
 6 n = 4 .
 7 
 8 PERFORM frm_jiecheng USING n .
 9 
10 WRITE n .
11 
12 FORM frm_jiecheng USING n  .
13 
14   DATA:n_1 TYPE i .
15 
16   n_1 = n - 1 .
17 
18   IF n = 1 .
19     n = 1 .
20   ELSE .
21     PERFORM frm_jiecheng USING n_1 .
22     n = n * n_1 .
23   ENDIF .
24 
25 ENDFORM .
posted @ 2022-06-23 14:29  TigerMan  阅读(181)  评论(0)  编辑  收藏  举报