获取汇率
READ_EXCHANGE_RATE 
--------------------------------------------------
获取每个月的最后一天
---------------------------------------------------
CALL FUNCTION 'LAST_DAY_OF_MONTHS'
EXPORTING
day_in = date
IMPORTING
last_day_of_month = date1.

-------------------------------------------------------

--------------------------------------------------------------
去掉前面0
*&--------------------------------------------------------------------*
*& Form frm_alpha_output 去零
*&--------------------------------------------------------------------*
DEFINE alpha_minus.
call function 'CONVERSION_EXIT_ALPHA_OUTPUT'
exporting
input = &1
importing
output = &1.
END-OF-DEFINITION.

---------------------------------------------------
前面加0
---------------------------------------------------
call function 'CONVERSION_EXIT_ALPHA_INPUT'
exporting
input = &1
importing
output = &1.

------------------------------------------------

踢用户
TH_DELETE_USER
---------------------------------------
CALL FUNCTION 'CUT_2BYTES_STRINGS'
EXPORTING
I_STR = T_STR
I_LEN = 4
IMPORTING
O_STR = T_TXT04
T_STR 输入字符 I_LEN 长度 T_TXT04输出字符

-------------------------------------------
金额转换成大写
---------------------------------------------
CALL FUNCTION 'SPELL_AMOUNT'
EXPORTING
AMOUNT = T_AMOUNT10
CURRENCY = 'RMB'
LANGUAGE = '1'
IMPORTING
IN_WORDS = S_AMWORD2
EXCEPTIONS
NOT_FOUND = 1
TOO_LARGE = 2
OTHERS = 3.
--------------------------------------------------------
用于比较新内表和原内表内容，key_length指原表'record'中所有字段的长度，
-------------------------------------------------------------------

*CALL FUNCTION 'CTVB_COMPARE_TABLES'
* EXPORTING
* TABLE_OLD = RECORD[] "原内表
* TABLE_NEW = RECORD2[] "新内表
* KEY_LENGTH = 91
* IMPORTING
* TABLE_DEL = RECORD3[]
** TABLE_ADD = RECORD4[]
** TABLE_MOD = RECORD5[]

--------------------------------------------------
把SAP里的负号放到前面来的函数
CLOI_PUT_SIGN_IN_FRONT
--------------------------------------------------
使用示例

DATA : t(10) TYPE c VALUE '65465-' .

CALL FUNCTION 'CLOI_PUT_SIGN_IN_FRONT'
CHANGING
value = t.

write : t .

-------------------------------------------
通过这个日期得出那天是星期几
DAY_IN_WEEK

----------------------------------------
用来得到将来/过去的日期的
RP_CALC_DATE_IN_INTERVAL

-------------------------------------------
日期的加减
BKK_ADD_MONTH_TO_DATE
--------------------------------------------------------------------

一组有用的用户交互窗口函数
POPUP_TO_CONFIRM_LOSS_OF_DATA 显示有YES/NO的弹出窗口，提示用户未保存的数据将丢失

POPUP_TO_CONFIRM_STEP 提示是否确认操作的弹出窗口

POPUP_TO_CONFIRM_WITH_MESSAGE 可以显示定制的提示信息的确认窗口

POPUP_TO_CONFIRM_WITH_VALUE 显示确认用户对某个特定对象的操作的弹出窗口

POPUP_TO_DECIDE 将待确认选项以单选按钮的方式显示的弹出窗口

POPUP_TO_DECIDE_WITH_MESSAGE 带消息的确认窗口

POPUP_TO_DISPLAY_TEXT 显示多行信息的窗口

POPUP_TO_SELECT_MONTH 月份选择窗口

POPUP_WITH_TABLE_DISPLAY 有表格对象的确认窗口

-------------------------------------------------------------------------------
一组操纵客户端文件系统的函数
GUI_CREATE_DIRECTORY 在PC上建立文件目录

GUI_DELETE_FILE 删除PC上的文件

GUI_DOWNLOAD 文件下载函数

GUI_EXEC 执行PC上的程序，或者打开文件

GUI_GET_DESKTOP_INFO 得到PC客户端的系统信息，比如操作系统等

GUI_REMOVE_DIRECTORY 删除PC目录

GUI_RUN 运行PC程序（ShellExecute）

GUI_UPLOAD 从PC上传程序

-------------------------------------------------------------------
判断某天是否是假日
HOLIDAY_CHECK_AND_GET_INFO
-------------------------------------------------------------------
ABAP_DOCU_DOWNLOAD
Download ABAP documentation in HTML format.
---------------------------------------------------------------------
GET_CURRENT_YEAR
得到当前的财政年（fiscal year）

---------------------------------------------------------------------
察看某日期的属性，包括该日期是星期几，第几天（周2=2），是不是公共假期等，需要输入国家日历。

DAY_ATTRIBUTES_GET

Return useful information about a day. Will tell you the day of theweek as a word (Tuesday), the day of the week (2 would be Tuedsay),whether the day is a holiday, and more.(provided by FrancoisHenrotte)?

-----------------------------------------------------------------------------------------------------

CLPB_IMPORT ：从剪贴板导入internal table
CLPB_EXPORT：从internal table输入到剪贴板

示例程序：GRCLPB_1

在SE38环境下的程序名输入栏输入'DEMO*'后按F4，你可以查到SAP所有的DEMO示例程序，会学到很多ABAP功能的实现方法,输入'BCALV*'后按F4，你可以查到很多ALV示例程序

SHIFT str LEFT DELETING LEADING '0'.如果要在layout显示不出前面的0 格式:&字段(zc)&
如果要在layout显示不出小数点后面的0 格式:&字段(.0)&
金额的阿拉伯数据转汉字的函数！

FUNCTION zfi_convert_to_capitalization.
*"----------------------------------------------------------------------
*"*"Local interface:
*" IMPORTING
*" REFERENCE(P_AMOUNT) TYPE WERTV8
*" EXPORTING
*" REFERENCE(P_CAPITALIZATION) TYPE STRING
*"----------------------------------------------------------------------
DATA:
v_s00(2) VALUE '零',
v_s01(2) VALUE '壹',
v_s02(2) VALUE '贰',
v_s03(2) VALUE '叁',
v_s04(2) VALUE '肆',
v_s05(2) VALUE '伍',
v_s06(2) VALUE '陆',
v_s07(2) VALUE '柒',
v_s08(2) VALUE '捌',
v_s09(2) VALUE '玖',
v_w00(2) VALUE '',
v_w01(2) VALUE '拾',
v_w02(2) VALUE '佰',
v_w03(2) VALUE '仟',
v_w04(2) VALUE '万',
v_w05(4) VALUE '拾万',
v_w06(4) VALUE '佰万',
v_w07(4) VALUE '仟万',
v_w08(2) VALUE '亿',
v_w09(4) VALUE '拾亿',
v_w10(4) VALUE '佰亿',
v_w11(4) VALUE '仟亿',
v_w12(4) VALUE '万亿',
v_sy(2) VALUE '元',
v_sj(2) VALUE '角',
v_sf(2) VALUE '分',
v_amount(16),"将金额转换成字符型
v_len TYPE i,"v_amount或p_capitalization的长度
v_var(5),"v_s0,v_s1,...,v_w0,v_w1,...
v_num(2) TYPE n,"每一位的数值
v_s_num(2),"v_s0,v_s1,...中的值
v_weight(2) TYPE n,"权数
v_w_num(4),"v_w0,v_w1,...中的值
v_flag0 TYPE i VALUE 1,"是否输出'零'，0不输出，1输出
v_n TYPE i VALUE 0.
v_amount = p_amount.
SHIFT v_amount LEFT DELETING LEADING space.
SHIFT v_amount LEFT DELETING LEADING '0'.
*-计算分-----------------------------------------
v_len = strlen( v_amount ).
v_len = v_len - 1.
v_num = v_amount+v_len(1).
IF v_num <> '0'.
CONCATENATE 'v_s' v_num INTO v_var.
WRITE (v_var) TO v_s_num.
CONCATENATE v_s_num v_sf p_capitalization INTOp_capitalization.
ENDIF.
*-计算角-----------------------------------------
v_len = strlen( v_amount ).
v_len = v_len - 2.
v_num = v_amount+v_len(1).
IF v_num <> '0'.
CONCATENATE 'v_s' v_num INTO v_var.
WRITE (v_var) TO v_s_num.
CONCATENATE v_s_num v_sj p_capitalization INTOp_capitalization.
ENDIF.
*-输出‘整’字-------------------------------------
IF p_capitalization = ' '.
CONCATENATE '整' p_capitalization INTO p_capitalization.
ENDIF.
*-计算整数---------------------------------------
v_len = strlen( v_amount ).
v_len = v_len - 3.
if v_len = 0.
exit.
endif.
v_amount = v_amount(v_len)." 整数部分
*-输出‘元’字-------------------------------------
CONCATENATE v_sy p_capitalization INTO p_capitalization.
v_n = v_len - 1.
v_weight = 0.
DO v_len TIMES.
* 从个位开始
v_num = v_amount+v_n(1).
IF v_num <> '0'.
CONCATENATE 'v_s' v_num INTO v_var.
WRITE (v_var) TO v_s_num.
CONCATENATE 'v_w' v_weight INTO v_var.
WRITE (v_var) TO v_w_num.
CONCATENATE v_s_num v_w_num p_capitalization INTOp_capitalization.
v_flag0 = 1.
ELSE.
IF v_flag0 = 1.
CONCATENATE 'v_s' v_num INTO v_var.
WRITE (v_var) TO v_s_num.
CONCATENATE v_s_num p_capitalization INTO p_capitalization.
v_flag0 = 0.
ENDIF.
ENDIF.
v_weight = v_weight + 1.
v_n = v_n - 1.
ENDDO.
*-删除个位可能出现'零'的情况-----------------
SEARCH p_capitalization FOR '元'.
IF sy-subrc = 0.
v_n = sy-fdpos - 2.
IF p_capitalization+v_n(2) = v_s00.
v_len = strlen( p_capitalization ).
CONCATENATE p_capitalization(v_n) p_capitalization+sy-fdpos INTOp_capitalization.
ENDIF.
ENDIF.
ENDFUNCTION.