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Lazarus?

Lazarus?. Lazarus is a free cross-platform visual integrated development environment (IDE) for rapid application development (RAD) using the Free Pascal compiler. Lazarus = Versi Gratis Delphi More : http://wiki.lazarus.freepascal.org/History. +/-. Kelebihan : Free

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Lazarus?

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  1. Lazarus? Lazarus is a free cross-platform visual integrated development environment (IDE) for rapid application development (RAD) using the Free Pascal compiler. Lazarus = Versi Gratis Delphi More : http://wiki.lazarus.freepascal.org/History

  2. +/- Kelebihan : • Free • Cross Platform IDE (Linux,Mac,Windows) • 3rd party add onsto extend the IDE • Reporting and Charting • CodeTyphon Kelemahan : Programmer kurang/belumpopuler

  3. IDE 1 3 2 Main menu Speed menu Component Pallete

  4. More : http://wiki.freepascal.org/Lazarus_Tutorial

  5. Membuat Project Baru Main Menu : Project -> New -> Application Menyimpan project Main Menu : File -> Save All

  6. Object Properties Caption : untukjudul/teks yang dimunculkanpada masing2 komponen Name : inisiasi masing2 komponen (Name tidakbolehmengandungspasi)

  7. Object Properties procedure TForm1.FormCreate(Sender: TObject); begin nama.caption:='NamaSayaBukanKamu'; end;

  8. Event AksiPengguna, digunakanuntukmemanggilprocedure OnClick, OnDblClick, OnExit, dll

  9. Event

  10. Event procedure TForm1.Button1Click(Sender: TObject); begin MessageDlg ('Hello World', mtInformation, [mbOK], 0); end;

  11. Event MessageDlg ('Hello World', mtInformation, [mbOK], 0);

  12. Event If MessageDlg('Please say YES or NO', mtConfirmation,[mbYes,mbNo],0)=mrYESthen Label1.Caption:='Your Answer is Yes' Else Label1.Caption:='Your Answer is NO';

  13. Perintah Sequence Perintah-perintah yang akandiprosesolehkompilersecaraberurutan.

  14. Deklarasi DeklarasiKonstantaadalahtandapengenaldalamlazarus yang sudahditetapkannilainya. Const pi=3.14;

  15. Deklarasi DeklarasiVariabeladalahtandapengenaldalam Lazarus yang nilainyadapatterusberubahselama proses aplikasiberjalan Varluas,vol: double;

  16. Operator Operator Penugasan, digunakanuntukmemberikannilaibarupadasebuah variable. Simbol operator penugasan “:=“

  17. Operator Operator Aritmatika, digunakanuntukmelakukan proses aritmatika

  18. Operator A:=‘Aku’; B:=‘Bisa’; C:=A+B; Operator String, digunakanuntukmenggabungkanduabuah string/lebih

  19. var A,B:integer; hasil:double; str_A,str_B,hasil_join:string;

  20. A:=StrToInt(editA.Text); B:=StrToInt(editB.Text); Hasil:=A+B; edithasil.Text:=FloatToStr(Hasil); str_A:=editA.Text; str_B:=editB.Text; Hasil_join:=str_A+str_B; edithasil.Text:=Hasil_join;

  21. Tipe Data TipeDasar : • Ordinal (Integer, Boolean) • Real

  22. Tipe Data Integer

  23. Tipe Data Real

  24. Tipe Data TipeKarakter: • Short strings (255) • Wide Strings (2^30) • Ansi Strings (2^31)

  25. Tipe Data var   Name : String[10];    Street : String; Message : AnsiString; Street can contain up to 255 characters

  26. Tipe Data

  27. Tipe Data procedure TForm2.btnHitungClick(Sender: TObject); var p,l,t,luas,vol : integer; begin P:=StrToInt(editPanjang.Text); L:=StrToInt(editLebar.Text); T:=StrToInt(editTinggi.Text); Vol:=P*L*T; Luas:=(2*P*L)+(2*P*T)+(2*L*T); editLuas.Text:=IntToStr(Luas); editVolume.Text:=IntToStr(Vol); end;

  28. Tipe Data Buatlah aplikasi untuk menghitung Volume dan Luas Permukaan Bola, rumusnya sbb : Volume := 4/3 * 3.14 * R * R * R Luas := 4 * 3.14 * R * R Tipe data apakah yang harus/pantas digunakan?

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