jd1f.pas

不完备信息的数据发现

unit jd1f;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  Tjd1 = class(TForm)
    Button3: TButton;
    Memo12: TMemo;
    Button4: TButton;
    Memo13: TMemo;
    Button5: TButton;
    Memo14: TMemo;
    Button1: TButton;
    Button2: TButton;
    Button6: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button6Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  jd1: Tjd1;

implementation

{$R *.dfm}

procedure Tjd1.Button1Click(Sender: TObject);
var t:double ;
begin
     t:=2/5 ;
     Memo12.Lines.Add(floattostr(t));
end;

procedure Tjd1.Button2Click(Sender: TObject);
var t:double ;
begin
     t:=1 ;
     Memo13.Lines.Add(floattostr(t));
end;

procedure Tjd1.Button6Click(Sender: TObject);
var t:double ;
begin
     t:=0 ;
     Memo14.Lines.Add(floattostr(t));
end;
end.