maximum bez pomocnej max

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    Edit1: TEdit;
    Edit2: TEdit;
    Edit3: TEdit;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    Button1: TButton;
    Label4: TLabel;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
a,b,c:integer;
begin
a:=StrToInt(Edit1.Text);
b:=StrToInt(Edit2.Text);
c:=StrToInt(Edit3.Text);

if a>b then
    begin
      if a>c then
              begin
              label4.caption:=inttostr(a);
              end else
                begin
                  label4.caption:=inttostr(c);
                   end;
              end else

              begin
              if b>c then
                  begin
                  label4.caption:=inttostr(b) end
                  else
                   begin
                   label4.caption:=inttostr(c);
                  end;
             end;
    end;

end.