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| 1. - program FuntToKg; uses Forms, Unit1 in 'Unit1.pas' {Form1}; {$R *.RES} begin Application.Initialize; Application.Title:= '-'; Application.CreateForm(TForm1, Form1); Application.Run; end. |
Program, , . , . uses : Forms Unti1.pas
{$R *.RES} , , , , . , , , .res
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begin end. .
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| 2. - unit Unit1; interface uses Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls; type TForm1 = class(TForm) Edit1: TEdit; Label1: TLabel; Label2: TLabel; Button1: TButton; procedure Button1Click(Sender: TObject); private { Private declarations } public { Public declarations } end; var Form1: TForm1; implementation {$R *.DFM} procedure TForm1.Button1Click(Sender: TObject); var f:real;// k:real;// begin f:=StrToFloat(Edit1.Text);// Edit1 k:=f*0.4059; label2.Caption:=Edit1.text+' (/) '+ FloatToStr(k)+ ' '; end; end. |
unit, . uses .
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implementation , , .
{$R *.DFM}, , , .dfm. DFM . 3 unit1.dfm . Delphi .
| 3. unit1.dfm - object Form1: TForm1 Left = 191 Top = 108 Width = 290 Height = 185 Caption = '-' Color = clBtnFace Font.Charset = DEFAULT_CHARSET Font.Color = clWindowText Font.Height = -11 Font.Name = 'MS Sans Serif' Font.Style = [] OldCreateOrder = False PixelsPerInch = 96 TextHeight = 13 object Label1: TLabel Left = 24 Top = 16 Width = 250 Height = 13 Caption = ' <>' end object Label2: TLabel Left = 24 Top = 80 Width = 121 Height = 73 WordWrap = True end object Edit1: TEdit Left = 24 Top = 48 Width = 121 Height = 21 TabOrder = 0 end object Button1: TButton Left = 160 Top = 48 Width = 75 Height = 25 Caption = '' TabOrder = 1 OnClick = Button1Click end end |
{$R *.DFM} . , .
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: file of _;
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res: file of char; { }
numb: file of integer; { }
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: TextFile;
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AssignFile, .
AssignFile :
AssignFile(var f, _: string);
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AssignFile(f,'c:\Windows\1.txt');
AssignFile(f,'\students\results.txt');
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AssignFile(f,'config.cfg');
write writeln. :
write(_, _);
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, f TextFile, x1 x2 :
write(f, ' : ',x1,x2);
write writeln , writeln , , " ".
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, , Rewrite(f), f - TextFile.
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| 4. procedure TForm1.Button1Click(Sender: TObject); var f:TextFile; i:integer; begin AssignFile(f,'D:\test.txt');{ } Rewrite(f); { } for i:=1 to 3 do writeln(f,' ',i);{ } CloseFile(f);{ } end; |
D: test.txt. :
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| 5. procedure TForm1.Button2Click(Sender: TObject); var f:TextFile; i:integer; begin AssignFile(f,'D:\test.txt');{ } Append(f);{ } for i:= 4 to 6 do writeln(f,' ',i);{} CloseFile(f);{ } end; |
, test.txt :
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| 6. unit Unit1; interface uses Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls; type TForm1 = class(TForm) Button1: TButton; Button2: TButton; procedure Button1Click(Sender: TObject); procedure Button2Click(Sender: TObject); private { Private declarations } public { Public declarations } end; var Form1: TForm1; implementation {$R *.DFM} procedure TForm1.Button1Click(Sender: TObject); var f:TextFile; i:integer; begin AssignFile(f,'D:\test.txt');{ } Rewrite(f); { } for i:=1 to 3 do writeln(f,' ',i);{ } CloseFile(f);{ } end; procedure TForm1.Button2Click(Sender: TObject); var f:TextFile; i:integer; begin AssignFile(f,'D:\test.txt');{ } Append(f);{ } for i:= 4 to 6 do writeln(f,' ',i);{} CloseFile(f);{ } end; end. |
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. , IOResult (Input - Output Result - -). IOResult 0, - , - .
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AssignFile(f,'D:\testfile.txt');
{$I-}
Append(f);{ }
{$I+}
If IOResult <> 0 //..
then Rewrite(f);//
. Close. close - . :
Close(f);
CloseFile(f);
