Настройка интерфейса программы

Unit Unit1;
 
 
interface
 
uses System, System.Drawing, System.Windows.Forms;
 
var
 a,b,c:integer;
 
 
type
  Form1 = class(Form)
    procedure button1_Click(sender: Object; e: EventArgs);
    procedure Form1_Load(sender: Object; e: EventArgs);
    procedure textBox1_TextChanged(sender: Object; e: EventArgs);
    procedure button3_Click(sender: Object; e: EventArgs);
  {$region FormDesigner}
  private
    {$resource Unit1.Form1.resources}
    button1: Button;
    button2: Button;
    button3: Button;
    textBox1: TextBox;
    {$include Unit1.Form1.inc}
  {$endregion FormDesigner}
  public
    constructor;
    begin
      InitializeComponent;
    end;
  end;
 
implementation
 
procedure Form1.button1_Click(sender: Object; e: EventArgs);
begin
 
 
 
 
 
textBox1.Text := FloatToStr(c);
b :=1;
if a = 1 then
 b:= b + 1
 else
   b:= 1;
 c := c + b;
 
end;
 
procedure Form1.Form1_Load(sender: Object; e: EventArgs);
begin
  
end;
 
procedure Form1.textBox1_TextChanged(sender: Object; e: EventArgs);
begin
  
end;
procedure Form1.button3_Click(sender: Object; e: EventArgs);
begin
;
 c := c - 10;
 a:=0;
 if c = c - 10 then
  
  a:=1
  else
    a := 0;
  
end;
end.