abap例子+2.1+(基本操作).doc

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abap例子+2.1+(基本操作).doc

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abap例子2.1(基本操作)

1 介绍 REPORT demo_hello_world. * Selection Screen PARAMETERS input(12) TYPE c DEFAULT Hello World!. * Dynpro CALL SCREEN 100. * List SKIP TO LINE 10. POSITION 40. WRITE input. 2 2.1 基本元素 2.1.1数据类型和数据对象 1 PROGRAM demo_elementary_data_objects. * demonstrates elementary data objects DATA text1(20) TYPE c. DATA text2 TYPE string. DATA number TYPE i. text1 = The number. number = 100. text2 = is an integer.. WRITE: text1, number, text2. 2 REPORT demo_types_statement. TYPES mytext(10) TYPE c. TYPES myamount TYPE p DECIMALS 2. DATA text TYPE mytext. DATA amount TYPE myamount. text = 4 / 3 = . amount = 4 / 3 . WRITE: text, amount. 3 REPORT demo_structure. TYPES: BEGIN OF name, title(5) TYPE c, first_name(10) TYPE c, last_name(10) TYPE c, END OF name. TYPES: BEGIN OF mylist, client TYPE name, number TYPE i, END OF mylist. DATA list TYPE mylist. list-client-title = Lord. list-client-first_name = Howard. list-client-last_name = Mac Duff. list-number = 1. WRITE list-client-title. WRITE list-client-first_name. WRITE list-client-last_name. WRITE / Number. WRITE list-number. 4 PROGRAM demo_internal_table. TYPES: BEGIN OF mytext, number TYPE i, name(10) TYPE c, END OF mytext. TYPES mytab TYPE STANDARD TABLE OF mytext WITH DEFAULT KEY. DATA text TYPE mytext. DATA itab TYPE mytab. text-number = 1. text-name = John. APPEND text TO itab. text-number = 2. text-name = Paul. APPEND text TO itab. text-number = 3. text-name = Ringo. APPEND text TO itab. text-number = 4. text-name = George. APPEND text TO itab. LOOP AT itab INTO text. WRITE: / text-number,text-name. ENDLOOP. 5 REPORT demo_describe_field. TYPES:?surname(20)??TYPE?c,???????street(30)???TYPE?c,???????zip_code(10)?TYPE?n,???????city(30)?????TYPE?c,???????phone(20)????TYPE?n,???????date?????????TYPE?sy-datum.TYPES:?BEGIN?OF?address,?????????name?TYPE?surname,?????????code?TYPE?zip_code,?