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Structure,field, :WindowsCOORDXY,X0,Y2 COORD STRUCT X WORD Y WORD COORD ENDS : 1; 2,structure variables;

. ?10? ????. 2007?11?. ????. 3. ??. ??(structure)???????????????????,???????????(field)????????????????????,???????????????????????????????????:Windows?????COORD?????????X?Y??????,?X??????????0,?Y????2?COORD STRUCTX WORD ?Y WORD ?COORD ENDS???????????????:1?????;2????????????????,??????(structure variables);3??????????????.

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Structure,field, :WindowsCOORDXY,X0,Y2 COORD STRUCT X WORD Y WORD COORD ENDS : 1; 2,structure variables;

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    1. ???? ???????????????

    3. 2007?11? ???? 3 ?? ??(structure)???????????????????,???????????(field)????????????????????,????????????????????????????????? ??:Windows?????COORD?????????X?Y??????,?X??????????0,?Y????2? COORD STRUCT X WORD ? Y WORD ? COORD ENDS ???????????????: 1?????; 2????????????????,??????(structure variables); 3??????????????

    4. 2007?11? ???? 4 ???? ????STRUCT?ENDS??????????????,???????????????????????????: ?? STRUCT ???? ?? ENDS ????????????? ????? ?????????????,??????????????????????,???????????????: ???:????(?)????????? ???:???(“”,’’)????????????? ??:??????????????????? ??:????????,??DUP???????????

    5. 2007?11? ???? 5 ?????? ?????????????,??????(structure variables),??????????,????????????<>(????{}),?????????????;?????????????????? .data point1 COORD <5,10> point2 COORD <> worker Employee <> ?????????????????????????Employee???IdNum?: person1 Employee <”55522333”> ??????????????,???????????,??????????????????????????????,?????WriteString????,??????????????

    6. 2007?11? ???? 6 ?????????????????????????????,????????IdNum?????LastName?: person3 Employee < ,”Jones”> ???????????,????DUP???????????????,?????????,????????0?????,????????SalaryHistory???????????0: person4 Employee <,,,2 DUP(20000)> ?????????????,??AllPoints???????????<0,0>: NumPoints=3 AllPoints COORD NumPoints DUP(<0,0>)

    7. 2007?11? ???? 7 ?????? TYPE?SIZEOF???????????????????????

    8. 2007?11? ???? 8 ???? ?????????????????????? ????? ????????????(?ESI)???????,???????????????????????????????? ????????????PTR???: mov esi,OFFSET worker mov ax,(Employee PTR [esi]).Years ???????????,?? Years???????????????: mov ax, [esi].Years ;invalid

    9. 2007?11? ???? 9 ?????? ??????????????????????????? ??:AllPoints.asm? ??:??????(ShowTime.asm)?

    10. 2007?11? ???? 10 ????? ???????????????,????????????(nested structure definitions)? ????Rectangle????????????????????,?????COORD??: Rectangle STRUCT UpperLeft COORD <> LowerRight COOED <> Rectangle ENDS Rectangle???????????????,???????COORD?,??????????: rect1 Rectangle <> rect4 Rectangle <<10,10>,<50,20>>

    11. 2007?11? ???? 11 ??????????????: mov rect1.UpperLeft.x,10 ????????????????????,??????????Y?????40,????ESI??: mov esi,OFFSET rect1 mov (Rectangle PTR [esi]).UpperLeft.Y,10 OFFSET??????????????????,???????: mov edi,OFFSET rect2.LowerRight mov (COORD PTR [edi]).x,50 mov edi,OFFSET rect2.LowerRight.x mov WORD PTR [edi],50 ??:????(Drunkard’s Walk)?

    12. 2007?11? ???? 12 ???????? ????????????????????????,??????????,??(union)??????????????????????????????????????????????,??????????UNION?ENDS???????: unionname UNION union-fields unionname ENDS ??????????,???????: structname STRUCT structure-fields UNION unionname union-fields ENDS structname ENDS

    13. 2007?11? ???? 13 ????????????????,????????????????????????,Integer???????????????????: Integer UNION D DWORD 0 W WORD 0 B BYTE 0 Integer ENDS ???????????????????????,?????????????

    14. 2007?11? ???? 14 ????????? ????????????????????,?????????:???????????????Integer????????: val1 Integer <12345678h> val2 Integer <100h> val3 Integer <> ??????????????????????????????????????Integer????,???????????????????????: mov val3.B,al mov val3.W,ax mov val3.D,eax ?????????????:INPUT_REC_STRUCT?

    15. 2007?11? ???? 15 ? ???(macro procedure)???????????????????,??????????????????????????,???????????????????? ?????????????(??????),??????????????,???????INCLUDE???????????????????????????????????????????,???????????????????????,?????????,??????????????? ???,????????,?????????CALL?RET????????????????:?????????????,??????????????????????????

    16. 2007?11? ???? 16 ???NewLine????????Crlf??????: NemLine MACRO call Crlf ENDM ?????????????,?????????,??????: .code NewLine ?????????????NewLine????,?????????????: call Crlf ???????????????????????????,???????TEXTEQU??????????,?????????????????,??????TEXTEQU?????????

    17. 2007?11? ???? 17 ???? ????MACRO?ENDM???????????????,?????: macroname MACRO parameter1,parameter2 … ENDM statement-list MACRO?ENDM???????????????????????????????????,?????????? ???? ????REQ???????????????,????????????????,??????????? ??? ????????????(;;)?????????????,??????????????

    18. 2007?11? ???? 18 ??ECHO??? ECHO???????????????????????????mPutchar?,????????????“Expanding The mPutchar macro”??: mPutchar MACRO char:REQ ECHO Expanding the mPutchar macro puch eax mov al,char call WriteChar pop eax ENDM

    19. 2007?11? ???? 19 ???? ?????????????????????,??????????????????????: ??? ??1,??2 … ???(macroname)??????????????????????,??????????????1,??2????????,?????????????????????,???????????????????????????????????????????????,??????????;??????????????????,??????????????? ??mPutChar:

    20. 2007?11? ???? 20 ???? mWriteStr? mReadStr? mGotoxy? ?????:?????????????????????????????? mDumpMem?

    21. 2007?11? ???? 21 ????????? ???????????,???????????????????????????: mWrite MACRO text LOCAL string ;;local lable .date string BYTE text,0 ;;define the string .code push edx mov edx,OFFSET string call Writestring pop edx ENDM

    22. 2007?11? ???? 22 LOCAL??????????mWrite??????????????,??????????mWrite????????????????,??????????mWrite?,??????????????: mWrite “Please enter your first name” mWrite “Please enter your last name” ???????????????????????????????????:

    23. 2007?11? ???? 23 mWrite “Please enter your first name” 1 .date 1 ??0000 BYTE “Please enter your first name”, 0 1 .code 1 push edx 1 mov edx, OFFSET ??0000 1 Call Writestring 1 pop edx mWrite “Please enter your last name” 1 .date 1 ??0000 BYTE “Please enter your last name”, 0 1 .code 1 push edx 1 mov edx, OFFSET ??0000 1 Call Writestring 1 pop edx ????????????“??nnn”,??nnn??????????????????????LOCAL???,????????????

    24. 2007?11? ???? 24 ???? ??????????????????,??????????,??????????????????,????(???)????????????????????????,????????(nested macro)??????????????,???????????????,????????????????????????????????????

    25. 2007?11? ???? 25 ??????? ?????????????????????????,?????????????: IF condition statement [ELSE statements] ENDIF ?????????????????,???????????“????”???,??????????????ENDIF????????????,????????????????????????????????

    26. 2007?11? ???? 26 ???????

    27. 2007?11? ???? 27 ??????? ???????????????????,???????????,???????????????????????????????,???IFB(if blank)???,??????????????;?????IFNB(if not blank)???,???????????? EXITM????????????,?????????????

    28. 2007?11? ???? 28 ????????? ????????????????????????,??????????????: paramname := <argument> ???mWriteLn??????????????,?????????,?????????????????????? mWriteLn MACRO text :=<“ ”> mWrite text call Crlf ENDM ????????(“”)????,??????????????,???????????????????

    29. 2007?11? ???? 29 ????? ????????????????????????: LT ?? GT ?? EQ ?? NE ??? LE ???? GB ????

    30. 2007?11? ???? 30 IF,ELSE?ENDIF??? IF???????????????????????????????????????,?????????????????????????IF?ENDM: IF expression statement-list ENDIF ????????IF,ELSE?ENDIF: IF expression statement-list ELSE statement-list ENDIF ??:mGotoxyConst??

    31. 2007?11? ???? 31 IFIDN?IFIDNI??? IFIDN??????????????,?????????IFIDNI???????????????????(?????)????,?????????TRUE????????????????????????????,IFIDNI?????,???????: IFIDNI <symbol>,<symbol> statements ENDIF IFIDN????IFIDNI?????? ??:mReadBuf??

    32. 2007?11? ???? 32 ????? ?4???????????????????:

    33. 2007?11? ???? 33 ?????(&) ?????(&)??????????????????????? ?????(%) ?????(%)?????????????????????????TEXTEQU?????,%????????????????????? ??????(%)???????????????,?????????????????????????

    34. 2007?11? ???? 34 ?????(<>) ?????(<>)?????????????????????,????????<>?????????????????????????(,)????(%)????(\)???(;)???????,?????????,???????????????????? ???????(!) ???????(!)??????????????????:???????????????????????

    35. 2007?11? ???? 35 ??? ?????????,????????????????,?????,??????EXITM?????????(??????)? ??????,????symbol????IsDefined????(-1),?????(0): IsDefined MACRO symbol IFDEF symbol EXITM <-1> ;;True ELSE EXITM <0> ;;False ENDIF ENDM ????????????????(())??? ??:HelloNew???

    36. 2007?11? ???? 36 ????? MASM???????????????????:WHILE,REPEAT,FOR?FORC??LOOP????,?????????????,???????????????????: WHILE??????????????????? REPEAT????????????????? FOR?????????????????????????? FORC?????????????????????????

    37. 2007?11? ???? 37 WHILE??? ????????????, WHILE??????????????: WHILE constExpression statements ENDM REPEAT??? REPEAT??????????????????: REPEAT constExpression statements ENDM constExpression?????????????,??????????

    38. 2007?11? ???? 38 FOR??? FOR???????????????????????,????????????????????????: FOR parameter,<arg1,arg2,…> statements ENDM ???????,??(parameter)????arg1;??????,??????arg2;??????????????????????

    39. 2007?11? ???? 39 FORC??? FORC????????????????????????,????????????????,????: FORC parameter,<string> statements ENDM ????????,??(parameter)????????????;??????,??????????????;????,????????

    40. 2007?11? ???? 40 ??:??List.asm ??????REPEAT?????????????????????,??????????????????????????????????????????????????;?????,???????????????????????,????????????????????

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