diff --git a/Unit3.cpp b/Unit3.cpp
new file mode 100644
index 0000000..0c41fb4
--- /dev/null
+++ b/Unit3.cpp
@@ -0,0 +1,218 @@
+//---------------------------------------------------------------------------
+
+#include <vcl.h>
+#pragma hdrstop
+
+#include "Unit3.h"
+//---------------------------------------------------------------------------
+#pragma package(smart_init)
+#pragma resource "*.dfm"
+TForm3 *Form3;
+//---------------------------------------------------------------------------
+__fastcall TForm3::TForm3(TComponent* Owner)
+        : TForm(Owner)
+{
+}
+//---------------------------------------------------------------------------
+
+
+void __fastcall TForm3::Button10Click(TObject *Sender)
+{
+        Edit1->Text=Edit1->Text+0;        
+}
+//---------------------------------------------------------------------------
+
+void __fastcall TForm3::Button7Click(TObject *Sender)
+{
+        Edit1->Text=Edit1->Text+1;        
+}
+//---------------------------------------------------------------------------
+
+void __fastcall TForm3::Button8Click(TObject *Sender)
+{
+        Edit1->Text=Edit1->Text+2;        
+}
+//---------------------------------------------------------------------------
+
+void __fastcall TForm3::Button9Click(TObject *Sender)
+{
+        Edit1->Text=Edit1->Text+3;        
+}
+//---------------------------------------------------------------------------
+
+void __fastcall TForm3::Button4Click(TObject *Sender)
+{
+        Edit1->Text=Edit1->Text+4;        
+}
+//---------------------------------------------------------------------------
+
+void __fastcall TForm3::Button5Click(TObject *Sender)
+{
+        Edit1->Text=Edit1->Text+5;        
+}
+//---------------------------------------------------------------------------
+
+void __fastcall TForm3::Button6Click(TObject *Sender)
+{
+        Edit1->Text=Edit1->Text+6;
+}
+//---------------------------------------------------------------------------
+
+void __fastcall TForm3::Button1Click(TObject *Sender)
+{
+        Edit1->Text=Edit1->Text+7;        
+}
+//---------------------------------------------------------------------------
+
+void __fastcall TForm3::Button2Click(TObject *Sender)
+{
+        Edit1->Text=Edit1->Text+8;        
+}
+//---------------------------------------------------------------------------
+
+void __fastcall TForm3::Button3Click(TObject *Sender)
+{
+        Edit1->Text=Edit1->Text+9;        
+}
+//---------------------------------------------------------------------------
+
+void __fastcall TForm3::Button13Click(TObject *Sender)
+{
+        if (mnozenie==true){
+                y=Edit1->Text.ToDouble();
+                x=x*y;
+                Edit1->Text="";
+
+        }
+        else{
+                x=Edit1->Text.ToDouble();
+                mnozenie=true;
+                Edit1->Clear();
+                dodawanie=false;
+                odejmowanie=false;
+                dzielenie=false;
+                przecinek=false;
+
+        }
+
+}
+//---------------------------------------------------------------------------
+
+void __fastcall TForm3::Button12Click(TObject *Sender)
+{
+ if (dzielenie==true){
+                y=Edit1->Text.ToDouble();
+                x=x/y;
+                Edit1->Text="";
+
+        }
+        else{
+                x=Edit1->Text.ToDouble();
+                dzielenie=true;
+                Edit1->Clear();
+                dodawanie=false;
+                odejmowanie=false;
+                mnozenie=false;
+                przecinek=false;
+
+        }
+}
+//---------------------------------------------------------------------------
+void __fastcall TForm3::Button14Click(TObject *Sender)
+{
+ if (dodawanie==true){
+                y=Edit1->Text.ToDouble();
+                x=x+y;
+                Edit1->Text="";
+
+        }
+        else{
+                x=Edit1->Text.ToDouble();
+                dodawanie=true;
+                Edit1->Clear();
+                mnozenie=false;
+                odejmowanie=false;
+                dzielenie=false;
+                przecinek=false;
+
+        }
+}
+//---------------------------------------------------------------------------
+void __fastcall TForm3::Button15Click(TObject *Sender)
+{
+ if (odejmowanie==true){
+                y=Edit1->Text.ToDouble();
+                x=x-y;
+                Edit1->Text="";
+
+        }
+        else{
+                x=Edit1->Text.ToDouble();
+                odejmowanie=true;
+                Edit1->Clear();
+                dodawanie=false;
+                mnozenie=false;
+                dzielenie=false;
+                przecinek=false;
+
+        }
+}
+//---------------------------------------------------------------------------
+void __fastcall TForm3::Button16Click(TObject *Sender)
+{
+        x=0;
+        y=0;
+        Edit1->Text="";
+        dodawanie=false;
+        odejmowanie=false;
+        mnozenie=false;
+        dzielenie=false;
+                
+}
+//---------------------------------------------------------------------------
+void __fastcall TForm3::Button17Click(TObject *Sender)
+{
+        if(dodawanie==true){
+                y=Edit1->Text.ToDouble();
+                x=x+y;
+                Edit1->Text=x;
+                x=0;
+                y=0;
+                przecinek=false;
+        }
+        if(odejmowanie==true){
+                y=Edit1->Text.ToDouble();
+                x=x-y;
+                Edit1->Text=x;
+                x=0;
+                y=0;
+                przecinek=false;
+        }
+        if(mnozenie==true){
+                y=Edit1->Text.ToDouble();
+                x=x*y;
+                Edit1->Text=x;
+                x=0;
+                y=0;
+                przecinek=false;
+        }
+        if(dzielenie==true){
+                y=Edit1->Text.ToDouble();
+                x=x/y;
+                Edit1->Text=x;
+                x=0;
+                y=0;
+                przecinek=false;
+        }
+}
+//---------------------------------------------------------------------------
+void __fastcall TForm3::Button11Click(TObject *Sender)
+{
+        if (!przecinek){
+                AnsiString cyfra=Edit1->Text;
+                cyfra+=',';
+                Edit1->Text=cyfra;
+                przecinek=true;
+        }
+}
+//---------------------------------------------------------------------------
diff --git a/Unit3.dfm b/Unit3.dfm
new file mode 100644
index 0000000..1988a12
--- /dev/null
+++ b/Unit3.dfm
@@ -0,0 +1,183 @@
+object Form3: TForm3
+  Left = 1045
+  Top = 225
+  Width = 673
+  Height = 675
+  BorderIcons = [biSystemMenu, biMinimize]
+  Caption = 'Kalkulator'
+  Color = clBtnFace
+  Font.Charset = DEFAULT_CHARSET
+  Font.Color = clWindowText
+  Font.Height = -13
+  Font.Name = 'MS Sans Serif'
+  Font.Style = []
+  OldCreateOrder = False
+  PixelsPerInch = 120
+  TextHeight = 16
+  object Button1: TButton
+    Left = 112
+    Top = 160
+    Width = 75
+    Height = 57
+    Caption = '7'
+    TabOrder = 0
+    OnClick = Button1Click
+  end
+  object Button2: TButton
+    Left = 200
+    Top = 160
+    Width = 75
+    Height = 57
+    Caption = '8'
+    TabOrder = 1
+    OnClick = Button2Click
+  end
+  object Button3: TButton
+    Left = 288
+    Top = 160
+    Width = 75
+    Height = 57
+    Caption = '9'
+    TabOrder = 2
+    OnClick = Button3Click
+  end
+  object Button4: TButton
+    Left = 112
+    Top = 232
+    Width = 75
+    Height = 57
+    Caption = '4'
+    TabOrder = 3
+    OnClick = Button4Click
+  end
+  object Button5: TButton
+    Left = 200
+    Top = 232
+    Width = 75
+    Height = 57
+    Caption = '5'
+    TabOrder = 4
+    OnClick = Button5Click
+  end
+  object Button6: TButton
+    Left = 288
+    Top = 232
+    Width = 75
+    Height = 57
+    Caption = '6'
+    TabOrder = 5
+    OnClick = Button6Click
+  end
+  object Button7: TButton
+    Left = 112
+    Top = 304
+    Width = 75
+    Height = 57
+    Caption = '1'
+    TabOrder = 6
+    OnClick = Button7Click
+  end
+  object Button8: TButton
+    Left = 200
+    Top = 304
+    Width = 75
+    Height = 57
+    Caption = '2'
+    TabOrder = 7
+    OnClick = Button8Click
+  end
+  object Button9: TButton
+    Left = 288
+    Top = 304
+    Width = 75
+    Height = 57
+    Caption = '3'
+    TabOrder = 8
+    OnClick = Button9Click
+  end
+  object Button10: TButton
+    Left = 112
+    Top = 376
+    Width = 161
+    Height = 57
+    Caption = '0'
+    TabOrder = 9
+    OnClick = Button10Click
+  end
+  object Button11: TButton
+    Left = 288
+    Top = 376
+    Width = 75
+    Height = 57
+    Caption = ','
+    TabOrder = 10
+    OnClick = Button11Click
+  end
+  object Button12: TButton
+    Left = 376
+    Top = 160
+    Width = 75
+    Height = 57
+    Caption = '/'
+    TabOrder = 11
+    OnClick = Button12Click
+  end
+  object Button13: TButton
+    Left = 376
+    Top = 232
+    Width = 75
+    Height = 57
+    Caption = '*'
+    TabOrder = 12
+    OnClick = Button13Click
+  end
+  object Button14: TButton
+    Left = 376
+    Top = 304
+    Width = 75
+    Height = 57
+    Caption = '+'
+    TabOrder = 13
+    OnClick = Button14Click
+  end
+  object Button15: TButton
+    Left = 376
+    Top = 376
+    Width = 75
+    Height = 57
+    Caption = '-'
+    TabOrder = 14
+    OnClick = Button15Click
+  end
+  object Button16: TButton
+    Left = 464
+    Top = 160
+    Width = 75
+    Height = 129
+    Caption = 'C'
+    TabOrder = 15
+    OnClick = Button16Click
+  end
+  object Button17: TButton
+    Left = 464
+    Top = 304
+    Width = 75
+    Height = 129
+    Caption = '='
+    TabOrder = 16
+    OnClick = Button17Click
+  end
+  object Edit1: TEdit
+    Left = 112
+    Top = 96
+    Width = 425
+    Height = 37
+    Font.Charset = DEFAULT_CHARSET
+    Font.Color = clWindowText
+    Font.Height = -23
+    Font.Name = 'MS Sans Serif'
+    Font.Style = []
+    ParentFont = False
+    TabOrder = 17
+  end
+end
diff --git a/Unit3.h b/Unit3.h
new file mode 100644
index 0000000..6c0cc9d
--- /dev/null
+++ b/Unit3.h
@@ -0,0 +1,64 @@
+//---------------------------------------------------------------------------
+
+#ifndef Unit3H
+#define Unit3H
+//---------------------------------------------------------------------------
+#include <Classes.hpp>
+#include <Controls.hpp>
+#include <StdCtrls.hpp>
+#include <Forms.hpp>
+//---------------------------------------------------------------------------
+class TForm3 : public TForm
+{
+__published:	// IDE-managed Components
+        TButton *Button1;
+        TButton *Button2;
+        TButton *Button3;
+        TButton *Button4;
+        TButton *Button5;
+        TButton *Button6;
+        TButton *Button7;
+        TButton *Button8;
+        TButton *Button9;
+        TButton *Button10;
+        TButton *Button11;
+        TButton *Button12;
+        TButton *Button13;
+        TButton *Button14;
+        TButton *Button15;
+        TButton *Button16;
+        TButton *Button17;
+        TEdit *Edit1;
+        void __fastcall Button10Click(TObject *Sender);
+        void __fastcall Button7Click(TObject *Sender);
+        void __fastcall Button8Click(TObject *Sender);
+        void __fastcall Button9Click(TObject *Sender);
+        void __fastcall Button4Click(TObject *Sender);
+        void __fastcall Button5Click(TObject *Sender);
+        void __fastcall Button6Click(TObject *Sender);
+        void __fastcall Button1Click(TObject *Sender);
+        void __fastcall Button2Click(TObject *Sender);
+        void __fastcall Button3Click(TObject *Sender);
+        void __fastcall Button13Click(TObject *Sender);
+        void __fastcall Button12Click(TObject *Sender);
+        void __fastcall Button14Click(TObject *Sender);
+        void __fastcall Button15Click(TObject *Sender);
+        void __fastcall Button16Click(TObject *Sender);
+        void __fastcall Button17Click(TObject *Sender);
+        void __fastcall Button11Click(TObject *Sender);
+private:	// User declarations
+public:		// User declarations
+double x;
+double y;
+char znak;
+bool przecinek;
+char dodawanie;
+char odejmowanie;
+char mnozenie;
+char dzielenie;
+        __fastcall TForm3(TComponent* Owner);
+};
+//---------------------------------------------------------------------------
+extern PACKAGE TForm3 *Form3;
+//---------------------------------------------------------------------------
+#endif
diff --git a/Unit3.obj b/Unit3.obj
new file mode 100644
index 0000000..787009c
Binary files /dev/null and b/Unit3.obj differ