!************************************** ! Name: Addition and Difference in Delphi ! Description:Here is a simple program to perform addition and subtraction in Delphi. I used Delphi 7 Enterprise edition in writing this program. I am currently accepting programming work, it projects, school and application development. programming projects, thesis and capstone projects, IT consulting. work, computer tutorials, and web development work kindly contact me in the following email address for further details. If you want to advertise on my website kindly contact me also in my email address also. Thank you. My email address is the following jakerpomperada@gmail.com, jakerpomperada@aol.com, and jakerpomperada@yahoo.com. My mobile number here in the Philippines is 09173084360. My telephone number at home here in Bacolod City, Negros Occidental Philippines is +63 (034) 4335675. Here in Bacolod I also accepting computer repair, networking and Arduino Project development at a very affordable price. My personal website is http://www.jakerpomperada.com ! By: Jake R. Pomperada ! ! ! Inputs:None ! ! Returns:None ! !Assumes:None ! !Side Effects:None !************************************** unit add_differece; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls; type TForm1 = class(TForm) Label1: TLabel; Label2: TLabel; Label3: TLabel; Label4: TLabel; Label5: TLabel; Edit1: TEdit; Edit2: TEdit; Button1: TButton; Button2: TButton; Button3: TButton; Label6: TLabel; Label7: TLabel; Label8: TLabel; procedure Button1Click(Sender: TObject); procedure Button2Click(Sender: TObject); procedure Button3Click(Sender: TObject); procedure FormCreate(Sender: TObject); private { Private declarations } public { Public declarations } end; var Form1: TForm1; implementation {$R *.dfm} var a,b : integer; procedure TForm1.Button1Click(Sender: TObject); begin a:= strtoint(edit1.text); b:= strtoint(edit2.text); label6.caption := 'The sum of ' + inttostr(a) + ' and ' +inttostr(b) + ' is ' +inttostr(a+b) + '.'; label7.caption := 'The difference of ' + inttostr(a) + ' and ' +inttostr(b) + ' is ' +inttostr(a-b) + '.'; end; procedure TForm1.Button2Click(Sender: TObject); begin edit1.text := ''; edit2.text := ''; label6.caption :=''; label7.caption :=''; edit1.SetFocus; end; procedure TForm1.Button3Click(Sender: TObject); begin if MessageDlg('Do you want to quit this program?', mtConfirmation, [mbYes, mbNO], 0) = mrYes then begin form1.Close; end else begin edit1.SetFocus; end; end; procedure TForm1.FormCreate(Sender: TObject); begin end; end.