unit Unit1;

interface

uses
  System.SysUtils, System.Types, System.UITypes, System.Classes, System.Variants,
  FMX.Types, FMX.Controls, FMX.Forms, FMX.Graphics, FMX.Dialogs,
  FMX.Controls.Presentation, FMX.StdCtrls, FMX.Edit;

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    Label3: TLabel;
    Button5: TButton;
    Edit1: TEdit;
    Edit2: TEdit;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;
  Zahl1, Zahl2: Single;

implementation

{$R *.fmx}


procedure TForm1.Button1Click(Sender: TObject);
begin
Zahl1 := StrToFloat(Edit1.Text);
Zahl2 := StrToFloat(Edit2.Text);
Label3.Text := FloatToStr (Zahl1+Zahl2);
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
Zahl1 := StrToFloat(Edit1.Text);
Zahl2 := StrToFloat(Edit2.Text);
Label3.Text := FloatToStr (Zahl1-Zahl2);
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
Zahl1 := StrToFloat(Edit1.Text);
Zahl2 := StrToFloat(Edit2.Text);
Label3.Text := FloatToStr (Zahl1 / Zahl2);
end;

procedure TForm1.Button4Click(Sender: TObject);
begin
Zahl1 := StrToFloat(Edit1.Text);
Zahl2 := StrToFloat(Edit2.Text);
Label3.Text := FloatToStr (Zahl1*Zahl2);
end;

end.