A. Flow Chart
B. Listing Program
program
lth;
uses
wincrt;
var
pilih:
byte;
procedure
Input_data;
type
mhs=record
npm:
string[7];
nama:
string[25];
nilai:
real;
end;
var
fmhs:
file of mhs;
rmhs:
mhs;
lagi:
char;
begin
assign(fmhs,'mhs.dat');
rewrite(fmhs);
lagi:='y';
while
upcase(lagi)='Y' do
begin
clrscr;
with
rmhs do
begin
gotoxy(5,6) ;write('Nomor Pokok Mahasiswa : ');
gotoxy(5,8) ;write('Nama Mahasiswa : ');
gotoxy(5,10)
;write('Nilai Mahasiswa : ');
gotoxy(30,6)
;readln(npm);
gotoxy(30,8)
;readln(nama);
gotoxy(30,10);readln(nilai);
end;
write(fmhs,rmhs);
gotoxy(5,15)
;write('Masukan data lagi [Y/T] ? ');
readln(lagi);
end;
close(fmhs);
end;
procedure
Tambah_data;
type
mhs=record
npm:
string[7];
nama:
string[25];
nilai:
real;
end;
var
fmhs:
file of mhs;
rmhs:
mhs;
lagi:
char;
begin
assign(fmhs,'mhs.dat');
{$I-}
reset(fmhs);
{$I+};
if
ioresult<>0 then rewrite(fmhs);
seek(fmhs,filesize(fmhs));
lagi:='y';
while
upcase(lagi)='Y' do
begin
clrscr;
with
rmhs do
begin
gotoxy(5,6) ;write('Nomor Pokok Mahasiswa : ');
gotoxy(5,8) ;write('Nama Mahasiswa : ');
gotoxy(5,10)
;write('Nilai Mahasiswa : ');
gotoxy(30,6)
;readln(npm);
gotoxy(30,8)
;readln(nama);
gotoxy(30,10);readln(nilai);
end;
write(fmhs,rmhs);
gotoxy(5,15)
;write('Masukan data lagi [Y/T] ? ');
readln(lagi);
end;
close(fmhs);
end;
procedure
Lihat_data;
type
mhs=record
npm:
string[7];
nama:
string[25];
nilai:
real;
end;
var
fmhs:
file of mhs;
rmhs:
mhs;
begin
assign(fmhs,'mhs.dat');
reset(fmhs);
clrscr;
writeln('-------------------------------------------------------------');
writeln('NPM nama mahasiswa nilai');
writeln('-------------------------------------------------------------');
while
not eof (fmhs) do
begin
read(fmhs,rmhs);
with
rmhs do
writeln(npm:7,nama:25,nilai:29:0);
end;
writeln('-------------------------------------------------------------');
close(fmhs);
readln;
end;
procedure Cari_data;
type
mhs=record
npm:
string[7];
nama:
string[25];
nilai:
real;
end;
var
fmhs:
file of mhs;
rmhs:
mhs;
i,jml:
integer;
nocari:
string[7];
lagi:
char;
ketemu:
boolean;
begin
assign(fmhs,'mhs.dat');
reset(fmhs);
jml:=
filesize(fmhs);
lagi:='y';
while
upcase(lagi)='Y' do
begin
clrscr;
ketemu:=
false;
write('Masukan
npm yang dicari : ');
readln(nocari);
writeln;
for
i:= 1 to jml do
begin
seek(fmhs,i-1);
read(fmhs,rmhs);
if
rmhs.npm=nocari then
begin
ketemu:=
true;
writeln('Nama
Mahasiswa : ',rmhs.nama);
writeln('Nilai
Mahasiswa : ',rmhs.nilai:2:0);
end;
end;
if
not ketemu then
writeln('Tidak
nomor tersebut!!!');
writeln;
write('cari
data lagi [Y/T] ? ');
readln(lagi);
end;
close(fmhs);
end;
procedure Koreksi_data;
type
mhs=record
npm:
string[7];
nama:
string[25];
nilai:
real;
end;
var
fmhs:
file of mhs;
rmhs:
mhs;
i,jml:
integer;
nocari:
string[7];
ketemu:
boolean;
lagi:
char;
begin
assign(fmhs,'mhs.dat');
reset(fmhs);
jml:=
filesize(fmhs);
lagi:='Y';
while
upcase(lagi)='Y' do
begin
ketemu:=
false;
clrscr;
write('Nomor
pokok mahasiswa yang dicari : '); readln(nocari);
writeln;
for
i:= 1 to jml do
begin
seek(fmhs,i-1);
read(fmhs,rmhs);
if
rmhs.npm=nocari then
begin
with
rmhs do
begin
ketemu:=
true;
writeln('Nomor
Pokok Mahasiswa : ',npm:7);
write('Koreksinya : '); readln(npm);
writeln('Nama
Mahasiswa : ',nama);
write('Koreksinya : '); readln(nama);
writeln('Nilai
Mahasiswa : ',nilai:2:0);
write('Koreksinya : '); readln(nilai);
end;
end;
seek(fmhs,i-1);
write(fmhs,rmhs);
end;
if
not ketemu then
writeln('Tidak
nomor tersebut!!!');
writeln;
write('ada
lagi yang akan dikoreksi [Y/T] ? ');
readln(lagi);
end;
close(fmhs);
end;
procedure Hapus_data;
type
mhs
= record
npm:
string[7];
nama:
string[25];
nilai:
real;
end;
var
fmhs:
file of mhs;
rmhs:
mhs;
nourut,i,jml:
integer;
nocari:
string[7];
ketemu:
boolean;
lagi,ya:
char;
begin
assign(fmhs,'mhs.dat');
reset(fmhs);
lagi:=
'Y';
while
upcase(lagi)='Y' do
begin
clrscr;
jml:=
filesize(fmhs);
write('Nomor
record yang dihapus (1 -',jml:3,') ?
');
readln(nourut);
writeln;
if
(nourut < 1) or (nourut > jml) then
writeln('Tidak
ada no record ini !!!')
else
begin
for
i:= nourut to jml do
begin
seek(fmhs,i-1);
read(fmhs,rmhs);
with
rmhs do
begin
writeln('Nama
Mahasiswa : ',rmhs.nama);
writeln('Nilai
Mahasiswa : ',rmhs.nilai:6:2);
end;
end;
writeln;
write('Yakin
data ini akan dihapus [Y/T] ? '); readln(ya);
if
upcase(ya) = 'Y' then
begin
seek(fmhs,nourut-1);
truncate(fmhs);
end;
end;
writeln;
write('ada
lagi yang akan dicari [Y/T] ? '); readln(lagi);
end;
close(fmhs);
end;
begin
while
true do
begin
clrscr;
gotoxy(20,2);
write('**MENU UTAMA**');
gotoxy(5,5);
write('1. Input data awal');
gotoxy(5,7);
write('2. Tambah data');
gotoxy(5,9);
write('3. Lihat semua data');
gotoxy(5,11);
write('4. Lihat data tertentu');
gotoxy(5,13);
write('5. Edit data');
gotoxy(5,15);
write('6. Hapus data');
gotoxy(5,17);
write('7. Selesai');
pilih
:= 0;
while
(pilih < 1) or (pilih > 7 ) do
begin
gotoxy(5,20);
write('Masukan pilihan : ');
readln(pilih);
if
(pilih < 1) or (pilih > 7) then
write
(^G);
case
pilih of
1:
Input_data;
2:
Tambah_data;
3:
begin
lihat_data;
writeln;
write('Tekan
enter untuk kembali ke MENU');
readln;
end;
4:
Cari_data;
5:
Koreksi_data;
6:
Hapus_data;
7:
Exit;
end;
end;
end;
end.
