Unit . , , Unit Global, GLOBAL.PAS. . Uses < >
:
Uses - (. );
< > - , ; , , : Uses Crt, Graph, Global;
Uses... , Interface .
Interface. (, , ), / .
, :
Unit Cmplx;
Interface
Type
Complex = Record
Re: Real;
Im: Real;
End;
Procedure AddC (X, : Complex; Var R: Complex);
Procedure MulC (X, : Complex; Var Z: Complex);
Uses Cmplx; Complex - Addc Mulc Cmplx.
Implementation , . : , , , , ..
, .. , , , :
Unit Cmplx;
Interface
Type
Complex = Record
Re: Real;
Im: Real;
End;
Procedure AddC (X, : Complex; Var Z: Complex);
Implementation
Procedure AddC;
Begin
Z.Re:= .R + Y.Re;
Z.Im:= X.Im + Y.Im;
End;
End.
. Begin - Begin ( End ). , . . Unit FileText;
Interface
Procedure Print(S: String);
Implementation
Var
F: Text;
Const Name = 'output.txt;
Procedure Print;
Begin
WriteLn(F, S);
End;
{ }
Begin
Assign(F, Name);
Rewrite(F);
{ }
End.
59. -.
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- 7.0 :
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- . , , , , .
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"Options" "Compiler". .
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- .
, : Uses, Label, Const, Type, Procedure, Function, Begin, .
, : {$A+, B-}.
:
- (Word Align Data)
{$A+}
. . ( 8086 , 80X86 , , ( ) . {$A+} :
1. ,
2. .
(Include Directories).
{$I < >}
. . . .PAS. - 15 . 15- . . , Begin End .
. (Object Directories).
{$L < - >}
. (.Obj) .
{$L} , External.
(Memory Sizes).
{$M < >, < >}.
. - - 1024 65520. - ( ). - 0 65360. {$M} Unit .
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(Conditional Defines).
{$ Define < >}
, .
- , - . }.
:
{$Define Debug}
..............
{$Ifdef Debug}
Writeln();
{$Endif}
60. .
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- , - , (64 ), ( 16 ) . , , 200 - 300 .
- , .
8086 -
. - , 64 , 16 ( 0, 16, 32, 48 ..). - , , . 16 . , - .
, - ( ).
Type
PerPnt = ^PerRec;{ PerRec}
PerRec = Record
Name: String;
Job: String;
Next: PerPnt;
End;
Var
P1: ^Integer;
P2: ^Real;
- :
Var
PP: Pointer;
. , .
- , .
Var
P1,P2: ^Integer;
P3: ^Real;
PP:Pointer;
Begin
P1:= P2; {- }
P1:= P3; {- }
:
PP:= P3;
P1:= PP;
. .
