????? 6 TURBO PASCAL

1
????? 6TURBO PASCAL

• OUTLINE
• 1. ??????????????????????????????????????
• 2. ???????????? (Data type)
• 3. ???????????? ??? ?????? (Operator and
  Expression)
• 4. ????????????????????? (Input/Output
  command)
• 5. ???????????? (Control Statement)

2
????? 1TURBO PASCAL

• TURBO PASCAL
• ????????? Dr. Niklaus Writh ?.?. 2514
• ????????????????????????????????????/???????
• ???????????????????
• ??????????????? ?? BEGIN ..END

3
??????????????

• 1. ?????? (reserved word ???? key word)
• ????????????????????????? ???????????????????????
  ???? PROGRAM, BEGIN,END IF
• 2. ????????? (standard identifiers)
• ??????????????????????????????
  ???????????????????????????? ??????????
  ??????????? 5 ?????? ???

4
??????????????

• Predefine type identifier ????????????????????????
  ???? ???? integer ,word, boolean, byte, real,
  char
• Predefine constant identifier ???????????????????
  ? ???? pi, true, false, maxint, nil
• Predefine procedure identifier ???????????????????
  ?????????????? ???? clscr, readln, move ,reset,
  delete

5
??????????????

• Predefine variable identifier ????????????????????
  ??? ???? mem, port, input, output, randseed
• Predefine function identifier ????????????????????
  ????????????? ???? upcase, random, sqrt, chr,
  ord, succ, readkey

6
??????????????

• 3. ??????????????????? (user-defined identifier)
  ??????????????????????? ???? ???????????
  ?????????? ????????????? ??????????????
  ????????????

7
IDENTIFIER

• ??????????????
• ?????????????????????????????????????????????????
  ???
• ?????? ????????? ?????????????????????????????????
  ????????????????????????
• user-defined ????????????????????????????????????
  ????????????????????????

8
???????????????????????????

• 1. ?????????????????????????????
• 2. ???????????????????????? ???????? ????
  ???????
• 3. ???????????????? ????????
• 4. ???????????????????????????????????????????
  ????
• INDEX, Index, inDEX
• 5. ????????????????????? ?????? 63 ??????
  (Version 4.0)
• 6. ?????????????????????

9
???????????????????????????

• Identifier ??????????
• RESULT
• A500
• NUM_OF_STUDENT
• MAXRATE
• CIRCLE

• Identifier ??????
• ROOM.07
• 1ABC
• BRGIN
• STOCK
• PAC MAN

10
???????????????????????????

• 1. ( ) ???? ????????????????
  ???????????????????????
• 2. ????????????? ????????????????????????
  ????????????? ?????????????????
• 3. ???????????????????????????????????????????
  ??
• 4. . ????????????????????????????????????????????
  ?????
• 5. ( ) , ??? ???????????????? - /

11
???????????????????

• ??????????????????????? 3 ???????????
• ??????? (Heading) ??????????? PROGRAM
• ???????????????? (Declaration part)???????????????
  ???????????? ??????????? ??????????????????
  (Subprogram)
• ?????????? (Statement part)???????????????????????
  ????? BEGIN- END

12
???????????????????
HEADING ???????

• PROGRAM program name (INPUT,OUTPUT)
• TYPE var type
• CONST var1 value
• VAR var2,var3 variable type
• PROCEDURE ???? FUNCTION
• BEGIN
• STATEMENT (S)
• END.

DECLARATION PART ????????????????
Statement Part ??????????
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HEADING

• ??????
• PROGRAM program name
  (INPUT,OUTPUT,FILE)
• ???????????????????? PROGRAM
• ??????????????????????????????????????????????
• ??????????????????????? ??????????????????????????
  ??????? ???? INPUT ?????????????? ???????
  ????????? OUTPUT ????????????? FILE
  ????????????????????????????????????

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HEADING

• ????????
• PROGRAM payroll
• PROGRAM tax (input, output)
• program score (input,output, scorefile)

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DECLARATION PART

• ??????
• TYPE var type
• CONST var1 value
• VAR var2,var3 variable
  type
• ?????????????????????????????????
  ???????????????? BEGIN-END
• ??????????????????????????????????????????????????
  ??????????

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DECLARATION PART

• ??????????????????????????? 4 ???? ????
  ????????????????????? ??? ????????????????????????
  ??????????
• ?????????????????????? ????? CONST
  ?????????????????
• ???????????????????????????? TYPE
  ?????????????????
• ????????????????????? VAR ?????????????????
• ??????????????? ???????? PROCEDURE ???? FUNCTION
  ???????????

17
??????????????????????

• ??????????????????????????????????????
  ????????????????????? ???? ??????? ?????????????
  ?????????? ???? ???pi

18
??????????????????????????

• program tax
• uses wincrt
• const rate 0.07
• var itemcost,saletax real
• begin
• write('Please enter cost of item')
• readln(itemcost)

• saletax rate itemcost
• writeln('Itemcost is
  ',itemcost62)
• writeln('Sales tax is
  ',saletax62)
• end.

19
??????????????????????

• Typed Constant
• CONST
• MAX RATE 0.07
• STOP CHAR
• PASSWORD STRING4 DANG

• ?????????????????????? ?? 2 ??????Untype Constant
  ??? Typed Constant
• Untype Constant
• CONST
• MAX 100
• RATE 0.07

20
??????????????????????

• ?????????????????????????????????????
  ??????????????????????????????????? ????
• pi ????? 3.1415926536E00 (real)
• false ????????????? (Boolean)
• true ????????????? (Boolean)
• maxint ????? 32767 (Integer)

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???????????????????????? (TYPE)

• ??????
• TYPE identifier type
• ???????????????????????????????
  ???????????????????????????????? ???? integer,
  real,char,string
• identifier ?????????????????????

22
????????????????????????????

• TYPE
• day mon,tue,wed,thu,fri,sat,sun)
• customer RECORD
• name string30
• age integer
• end

• Maxstring string80
• namelist ARRAY 1..100 of string 30

23
???????????????? ( VAR)

• ??????
• VAR identifier, identifier
  type
• ?????????????????????????????? (Variable)
• ????????????????????????????????????????
• ??????????????????????????????????????????????????
  ?????
• ????????????? Assign ??? ???? ??????? (Readln)
  ???????????????????

24
???????????????????????? ( VAR)

• VAR
• result,subtotal real
• I,j,k integer
• name string 30
• grade char
• flag Boolean
• buffer array 1..128 of byte

25
???????????????

• ??????????????? ??????????????????????????????????
  
• ????????????????????????????????????????????????
  ??????????
• ????????????????????? ???? PROCEDURE ????
  FUNCTION
• ?????? END
• ??????????????????????????????????????

26
??????????

• ??????????? BEGIN ?? ???? END.
• ???????????????????????????
• ?????????????????????????????????
  ????????????????????????????????????????