Program Pointer Single Linked List, Insert from the front, from behind, and insert adding Free Pascal

Introduce

Free Pascal is a compiler for the closely related programming language dialects, Pascal and Object Pascal. It is free software released under the GNU General Public License.

It supports its own Object Pascal dialect as well as the dialects of several other Pascal family compilers to a certain extent, including those of Turbo Pascal, Delphi, and some historical Macintosh compilers. The dialect is selected on a per-unit (module) basis, and more than one dialect can be used per program.

It follows a write once, compile anywhere philosophy, and is available for many CPU architectures and operating systems (see Targets). It supports integrated assembly language and an internal assembler in several dialects.[clarification needed]

Separate projects exist to facilitate developing cross-platform graphical user interface (GUI) applications, the most prominent one being the Lazarus integrated development environment (IDE).
source

What Will I Learn?

• insert data from the front
• data in the middle
• inserting data from behind
• delete data from the front
• delete data from the middle
• delete rear data
• prosudur print data
• data program

Requirements

• Your computer or leptop must already have Free pascal installed, if not you can mneginstal here
• Make sure your computer or leptop supports free pascal system tools

Difficulty

• Advanced

Tutorial Contents

My tutorial is using indonesian language.
No need to stale more, I will immediately display the tutorial that I mentioned earlier, below:

SINGLE LINKED LIST SIGN LINED LEARNING PROGRAM OF HOME, READ AND SIDE

Uses WinCrt; 
Type 
    Pointer = ^TypeData; 
    TypeData = Record 
                  Nilai      : integer; 
                  Berikutnya : Pointer; 
               End; 
Var 
   List : Pointer; 

• insert data from the front

Procedure Masuk_Depan(Var L : Pointer; X : Integer); 
Var 
   Baru : Pointer; 
Begin 
     New(Baru); 
     Baru^.Nilai := X;      Baru^.Berikutnya := Nil;      if L = Nil then L := Baru 
     else          Begin 
              Baru^.Berikutnya :=L; 
              L :=Baru; 
         End; 
End; 

• insert data in the middle

Procedure Sisip_Tengah(Var L : Pointer; X, Y : Integer); 
Var 
   Baru,Bantu : Pointer; 
Begin 
     Bantu := L; 
     While Bantu^.berikutnya <> Nil Do 
     Begin 
          If Bantu^.Nilai = X Then 
          Begin 
               New(Baru); 
               Baru^.Nilai := Y; 
               Baru^.Berikutnya := Bantu^.Berikutnya; 
               Bantu^.Berikutnya := Baru; 
          End; 
          Bantu := Bantu^.Berikutnya; 
     End; 
End; 

• inserting data from behind

Procedure Masuk_Belakang(Var L : Pointer; X : Integer); 
Var 
   Baru,Bantu : Pointer; 
Begin 
     New(Baru); 
     Baru^.Nilai := X; 
     Baru^.Berikutnya := Nil; 
     Bantu := L; 
     While Bantu^.Berikutnya <> Nil Do 
           Bantu := Bantu^.Berikutnya; 
     Bantu^.Berikutnya := Baru; 
End; 

• delete data from the front

Procedure Hapus_Depan(Var L : Pointer); 
Var 
   Baru : Pointer; 
Begin      Baru := L; 
     if L = Nil then Writeln('List Kosong...')      else          Begin 
              L := L^.Berikutnya;               dispose(Baru); 
         End; 
End; 

• delete data from the middle

Procedure Hapus_Tengah(Var L : Pointer; X : Integer); 
Var 
   Bantu,Hapus : Pointer; 
Begin 
     Bantu := L; 
     if L = Nil then Writeln('List Kosong...')      else          Begin 
              Bantu := L; 
              New(Hapus); 
              While Bantu^.Berikutnya <> nil Do               Begin 
                   if Bantu^.Berikutnya^.nilai = X then                    begin 
                        Hapus:=Bantu^.Berikutnya; 
                        Bantu^.Berikutnya:=Hapus^.Berikutnya;                         dispose(Hapus);                    End                    else 
                       Bantu:=Bantu^.Berikutnya; 
              End; 
         End; 
End;

• delete data from behind

Procedure Hapus_Belakang(Var L : Pointer); 
Var 
   Baru,bantu : Pointer; 
Begin 
     Bantu := L; 
     if Bantu = Nil then Writeln('List Kosong...')      else          Begin 
              While Bantu^.Berikutnya^.Berikutnya <> nil do 
                    Bantu := Bantu^.berikutnya; 
              New(Baru); 
              Baru := Bantu^.Berikutnya;               Bantu^.Berikutnya:=nil;               dispose(Baru); 
         End; 
End; 

• prosudur print data

Procedure Cetak(L : Pointer); 
Var 
   Bantu : Pointer; 
Begin 
     Bantu := L; 
     While Bantu <> Nil Do 
     Begin 
          Write(Bantu^.Nilai:3); 
          Bantu:=Bantu^.Berikutnya; 
     End; 
End; 

• main program

Var 
   Bil,Bil1 : integer; 
   JB       : Char; 
Begin 
     New(List); 
     List:=nil; 
     Jb := 'Y'; 
     Writeln('MASUK DEPAN'); 
     While UpCase(Jb)='Y' Do 
     Begin 
           Write('Masukkan Bilangan : '); Readln(Bil); 
           Masuk_Depan(List,Bil); 
           Write('Lagi[Y/T] ');Readln(Jb); 
     End; 
     Cetak(List); 
     Writeln; 
     Jb := 'Y'; 
     Writeln('MASUK BELAKANG'); 
     While UpCase(Jb)='Y' Do 
     Begin 
           Write('Masukkan Bilangan : '); Readln(Bil); 
           Masuk_Belakang(List,Bil); 
           Write('Lagi[Y/T] ');Readln(Jb); 
     End;      Cetak(List);      writeln;      Jb := 'Y'; 
     Writeln('MASUK DEPAN'); 
     While UpCase(Jb)='Y' Do 
     Begin 
           Write('Masukkan Bilangan : '); Readln(Bil); 
           Masuk_Depan(List,Bil); 
           Write('Lagi[Y/T] ');Readln(Jb); 
     End; 
     Cetak(List); 
     Writeln; 
     Writeln('SISIP TENGAH'); 
     Write('Masukkan Bilangan Yg akan disisip : '); 
     Readln(Bil1); 
     Write('Disisip Setelah Bilangan          : '); 
     Readln(Bil); 
     Sisip_Tengah(List,Bil,Bil1); 
     Cetak(List);      Writeln; 
     writeln('HAPUS DEPAN '); 
     Hapus_Depan(List); 
     Cetak(List);      Writeln; 
     writeln('HAPUS BELAKANG'); 
     Hapus_Belakang(List); 
     Cetak(List); 
     Writeln; 
     Writeln('HAPUS TENGAH'); 
     Write('Masukkan Bilangan Yg akan dihapus : '); 
     Readln(Bil); 
     Hapus_Tengah(List,Bil); 
     Cetak(List); 
     Writeln;  
End. 

• below is the result

Hopefully the above tutorial useful for friends of all friends, thanks for everything,
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