Program Data_Mahasiswa;
Uses WinCrt;
Type Mahasiswa = Record
NoMhs : Word;
Nama : String[20];
IPK : Real;
Usia : Byte;
End;
Var Filemhs : File of Mahasiswa;
Data : Mahasiswa;
Pil,Ul : Char;
Procedure Menu;
Begin
Clrscr;
Gotoxy(34,1);Write('MENU PILIHAN');
Gotoxy(34,2);Write('============');
Gotoxy(27,4);Write('1. Tambah Data Mahasiswa');
Gotoxy(27,5);Write('2. Edit Data Mahasiswa');
Gotoxy(27,6);Write('3. Hapus Data Mahasiswa');
Gotoxy(27,7);Write('4. Tampilkan Data Mahasiswa');
Gotoxy(27,8);Write('5. View Mahasiswa Berdasarkan Umur');
Gotoxy(27,9);Write('6. Hapus NoMhs Ganjil');
Gotoxy(27,10);Write('9. Keluar (Exit)');
Gotoxy(32,12);Write('Pilihan [1..9]: ');Pil:=Readkey;
End;
Procedure BukaFile;
Begin
Assign(FileMhs,'Mhs.Dat');
{$I-};
Reset(FileMhs);
{$I+};
End;
Procedure Tambah;
Var Lagi: Char;
Ada : Boolean;
i : Integer;
NOCR: Word;
Begin
Ul:='Y';
Lagi:='Y';
Clrscr;
BukaFile;
If IOResult<>0 Then
Rewrite(FileMhs);
Repeat
Clrscr;
Ada:=False;
i:=0;
Gotoxy(30,1);Write('TAMBAH DATA MAHASISWA');
Gotoxy(30,2);Write('=====================');
Gotoxy(20,4);Write('No. Mahasiswa : ');Readln(NOCR);
While (Ada=False) And (i<>Filesize(FileMhs)) Do
Begin
Seek(FileMhs,i);
Read(FileMhs,Data);
If Data.NoMhs=NOCR Then
Ada:=True
Else
Inc(i);
End;
If (Ada=True) Then
Begin
Gotoxy(20,9);Write('Nomor Mahasiswa "',NOCR,'" Ini Sudah Ada!');
End
Else
Begin
Seek(FileMhs,Filesize(FileMhs));
Data.NoMhs:=NOCR;
Gotoxy(20,5);Write('Nama Mahasiswa : ');Readln(Data.Nama);
Gotoxy(20,6);Write('IPK : ');Readln(Data.IPK);
Gotoxy(20,7);Write('Umur : ');Readln(Data.Usia);
Write(FileMhs,Data);
End;
Gotoxy(20,10);Write('Mau Tambah Data Lagi [Y/T]: ');Lagi:=Upcase(Readkey);
Until Lagi<>'Y';
Close(FileMhs);
End;
Procedure Edit;
Var Lagi: Char;
Ada : Boolean;
i : Integer;
NOCR: Word;
Begin
Ul:='Y';
Lagi:='Y';
Clrscr;
BukaFile;
If IOResult<>0 Then
Write('Data Masih Kosong...!')
Else
Begin
Repeat
Clrscr;
Ada:=False;
i:=0;
Gotoxy(30,1);Write('EDIT DATA MAHASISWA');
Gotoxy(30,2);Write('=====================');
Gotoxy(20,4);Write('No. Mahasiswa : ');Readln(NOCR);
While (Ada=False) And (i<>Filesize(FileMhs)) Do
Begin
Seek(FileMhs,i);
Read(FileMhs,Data);
If Data.NoMhs=NOCR Then
Begin
Ada:=True;
Gotoxy(20,5);Write('Nama Mahasiswa : ',Data.Nama);
Gotoxy(20,6);Write('IPK : ',Data.IPK:1:2);
Gotoxy(20,7);Write('Umur : ',Data.Usia);
End
Else
Inc(i);
End;
If (Ada=True) Then
Begin
Data.NoMhs:=NOCR;
Gotoxy(20,9);Write('Nama Mahasiswa : ');Readln(Data.Nama);
Gotoxy(20,10);Write('IPK : ');Readln(Data.IPK);
Gotoxy(20,11);Write('Umur : ');Readln(Data.Usia);
Seek(FileMhs,i);
Write(FileMhs,Data);
End
Else
Begin
Gotoxy(20,13);Write('Nomor Mahasiswa "',NOCR,'" Ini Tidak Ada!');
End;
Gotoxy(20,14);Write('Mau Edit Data Lagi [Y/T]: ');Lagi:=Upcase(Readkey);
Until Lagi<>'Y';
End;
Close(FileMhs);
End;
Procedure Hapus;
Var FileTmp : File of Mahasiswa;
Lagi,Hapus: Char;
Ada : Boolean;
i : Integer;
NOCR : Word;
Begin
Ul:='Y';
Lagi:='Y';
Clrscr;
Repeat
BukaFile;
If IOResult<>0 Then
Write('Data Masih Kosong...!')
Else
Begin
Clrscr;
Assign(FileTmp,'mhs.tmp');
Rewrite(FileTmp);
Ada:=False;
i:=0;
Gotoxy(30,1);Write('HAPUS DATA MAHASISWA');
Gotoxy(30,2);Write('=====================');
Gotoxy(20,4);Write('No. Mahasiswa : ');Readln(NOCR);
While (Ada=False) And (i<>Filesize(FileMhs)) Do
Begin
Seek(FileMhs,i);
Read(FileMhs,Data);
If Data.NoMhs=NOCR Then
Ada:=True
Else
Inc(i);
End;
If (Ada=True) Then
Begin
Gotoxy(20,5);Write('Nama Mahasiswa : ',Data.Nama);
Gotoxy(20,6);Write('IPK : ',Data.IPK:1:2);
Gotoxy(20,7);Write('Umur : ',Data.Usia);
Gotoxy(20,9);Write('Data Ini Mau Di Hapus [Y/T]: ');Readln(Hapus);
If Upcase(Hapus)='Y' Then
Begin
For i := 1 to Filesize(FileMhs) Do
Begin
Seek(FileMhs,i-1);
Read(FileMhs,Data);
If Data.NoMhs<>NOCR Then
Write(FileTmp,Data);
End;
Close(FileMhs);
Assign(FileMhs,'MHS.Dat');
Erase(FileMhs);
Assign(FileTmp,'Mhs.tmp');
Rename(FileTmp,'Mhs.Dat');
Gotoxy(20,10);Write('Nomor Mahasiswa "',NOCR,'" Sudah Di Hapus!');
End;
End
Else
Begin
Gotoxy(20,10);Write('Nomor Mahasiswa "',NOCR,'" Ini Tidak Ada!');
End;
Gotoxy(20,11);Write('Mau Hapus Data Lagi [Y/T]: ');Lagi:=Upcase(Readkey);
End;
Until Lagi<>'Y';
End;
Function RataIPK(TIPK:Real;n:integer):Real;
Begin
RataIPK:=TIPK/n;
End;
Procedure Tampil;
Var i : Integer;
TIPK : Real;
Begin
Ul:='Y';
TIPK:=0;
BukaFile;
If IoResult <> 0 Then
Write('Maaf Data Masih Kosong ! ')
Else
Begin
Clrscr;
Writeln(' DATA MAHASISWA ');
Writeln;
Writeln('================================================');
Writeln(' NO NIM NAMA IPK UMUR ');
Writeln('================================================');
i:=0;
While Not EoF(FileMhs) Do
Begin
Inc(i);
Read(FileMhs,Data);
Writeln(i:3,Data.NoMhs:6,Data.Nama:20,Data.IPK:8:2,Data.Usia:10);
TIPK:=TIPK+Data.IPK;
End;
Writeln('================================================');
Writeln('Rata-Rata IPK: ',RataIPK(TIPK,i):1:2);
Writeln('================================================');
Close(FileMhs);
End;
Writeln;
Write('Press Any Key to Continue...');Readkey;
End;
Procedure View_Umur;
Var i : Integer;
Umur : Byte;
Lagi : Char;
Begin
Ul:='Y';
Lagi:='Y';
Repeat
Clrscr;
Write('Tampilkan Umur Besar Dari: ');Readln(Umur);
BukaFile;
If IoResult <> 0 Then
Write('Maaf Data Masih Kosong ! ')
Else
Begin
Writeln(' DATA MAHASISWA ');
Writeln(' UMUR DI ATAS ',Umur:2,' TAHUN');
Writeln;
Writeln('================================================');
Writeln(' NO NIM NAMA IPK UMUR ');
Writeln('================================================');
i:=0;
While Not EoF(FileMhs) Do
Begin
Read(FileMhs,Data);
If Data.Usia>Umur Then
Begin
Inc(i);
Writeln(i:3,Data.NoMhs:6,Data.Nama:20,Data.IPK:8:2,Data.Usia:10);
End;
End;
Writeln('================================================');
Close(FileMhs);
End;
Writeln;
Write('Mau Lihat Data Lagi [Y/T]: ');Lagi:=Upcase(Readkey);
Until Lagi<>'Y';
End;
Procedure Hapus_NoMhs;
Var FileTmp : File of Mahasiswa;
Lagi,Hapus: Char;
i : Integer;
Begin
Ul:='Y';
Lagi:='Y';
Clrscr;
Repeat
BukaFile;
If IOResult<>0 Then
Write('Data Masih Kosong...!')
Else
Begin
Clrscr;
Assign(FileTmp,'mhs.tmp');
Rewrite(FileTmp);
i:=0;
Gotoxy(20,3);Write('Mau Menghapus No. Mahasiswa Yang Ganjil [Y/T]: ');Readln(Hapus);
If Upcase(Hapus)='Y' Then
Begin
For i := 1 to Filesize(FileMhs) Do
Begin
Seek(FileMhs,i-1);
Read(FileMhs,Data);
If (Data.NoMhs Mod 2)=0 Then
Write(FileTmp,Data);
End;
Close(FileMhs);
Assign(FileMhs,'Mhs.Dat');
Erase(FileMhs);
Assign(FileTmp,'Mhs.tmp');
Rename(FileTmp,'Mhs.Dat');
Gotoxy(20,10);Write('Nomor Mahasiswa Sudah Di Hapus!');
End;
Gotoxy(20,11);Write('Mau Hapus Data Lagi [Y/T]: ');Lagi:=Upcase(Readkey);
End;
Until Lagi<>'Y';
End;
Begin
Repeat
Menu;
Case Pil Of
'1' : Tambah;
'2' : Edit;
'3' : Hapus;
'4' : Tampil;
'5' : View_Umur;
'6' : Hapus_NoMhs;
End;
Until (Ul<>'Y') Or (Pil='9');
DoneWinCrt;
End.
Rabu, 04 April 2012
Program data mahasiswa
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