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Delphi System.Frac: 返回小数部分,delphi获取小数后面的数

位置:首页 > delphi教程 > 高级教程,2013-05-26
unitUnit1;interfaceusesWindows,Messages,SysUtils,Variants,Classes,Graphics,Controls,Forms,Dialogs,St...

unit Unit1;


interface


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


type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  end;


var
  Form1: TForm1;


implementation


{$R *.dfm}


procedure TForm1.Button1Click(Sender: TObject);
var
  x,y: Real;
begin
  x := Frac(456.123);
  y := Frac(-456.123);


  ShowMessage(FloatToStr(x)); {返回:0.123}
  ShowMessage(FloatToStr(y)); {返回:-0.123}
end;


end.




TAGS:delphi获取小数后面的数

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