Var a,b,c: Real; D: Real

unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls;
type
TForm1 = class(TForm)
Label1: TLabel;
Label2: TLabel;
Edit1: TEdit;
Button1: TButton;
Button2: TButton;
Button3: TButton;
Button4: TButton;
Label3: TLabel;
Label4: TLabel;
procedure Button1Click(Sender: TObject);
procedure Button2Click(Sender: TObject);
procedure Button3Click(Sender: TObject);
procedure Button4Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
var a:real;
begin
a:=strtofloat(edit1.text);
if a>0 then label2.Caption:='Bu son musbat' else
label2.Caption:='Bu son manfiy ';
if a=0 then label2.Caption:='Bu son nolga teng';
end;
procedure TForm1.Button2Click(Sender: TObject);
var a,a1:real;
begin
a:=strtofloat(edit1.text);
a1:=abs(a);
label3.Caption:='sonning moduli'+floattostr(a1)+'ga teng‘;
end;
procedure TForm1.Button3Click(Sender: TObject);
begin
edit1.Text:='';
label2.Caption:='';
edit1.SetFocus;
end;
procedure TForm1.Button4Click(Sender: TObject);
begin
form1.Close;
end;
end.

Izoh : Har qanday sonni ishorasini va modulini aniqlashimiz uchun, hosil qilingan dastur maydoniga yangi qiymat kiritish orqali natijani olishimiz mumkin.
5-misol. Bir ishchini 1 oylik xarajatini hisoblash dasturini tuzing.
Bu ko‘rinishdagi masalani yechish uchun 1 oyda ishlatiladigan xarajatlar ro‘yxatini tuzib olishimiz kerak. Misol tariqasida xarajatlar ro‘yxati quyidagicha bo‘lsin:
1. Ijara haqi;
2. Telefon xizmati;
3. Ovqatlanishga ketadigan xarajati;
4. Yo‘l haqi;
5. Kiyinishga ketadigan xarajati;
6. Ba’zi bir boshqa xarajatlar.
Dastur kodi va oynaning umumiy ko‘rinishini keltiramiz: