为什么我这样写也是错的？
procedure TForm1.Button1Click(Sender: TObject);
var
n1,n2: Integer
begin

end;

end.


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[错误] Unit1.pas(29): ';' expected but 'BEGIN' found
[致命错误] Project1.dpr(5): Could not compile used unit 'Unit1.pas'

[解决办法]
Integer; 加上分号