unit1.pas

来自「Delphi函数参考大全的CD」· PAS 代码 · 共 39 行

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    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
  s1,s2,s3,s4,s5 : String;
begin
  s1 := FloatToStr(RoundTo(126.551,-2));
  s2 := FloatToStr(RoundTo(126.551,-1));
  s3 := FloatToStr(RoundTo(126.551,0));
  s4 := FloatToStr(RoundTo(126.551,1));
  s5 := FloatToStr(RoundTo(-126.451,-1));
  Caption := s1+'   '+s2+'   '+s3+'   '+s4+ '   '+s5+'   ';
end;

end.