PROGRAM PENJUALAN MOTOR SEDERHANA MENGGUNAKAN C++

Assalamu'alaikum wr.wb
Ini adalah program sederhana dari Penjualan Motor Sederhana Saya menggunakan C++.
#include iostream.h
#include iomanip.h
#include stdio.h
#include stdlib.h
#include math.h
#include conio.h
#include string.h

struct data {
char kode[7] ;
char nama[30] ;
float harga, jumlah, total ;
} mtr[50] ;
float jumlah;
void menu() ;
void isi();
void baca();

void main()
{
char pil ='0' ;
while (pil != '3')
{
menu() ;
pil = getche() ;
switch(pil)
{
case '1' :
isi() ; break ;
case '2' :
baca() ; break ;
case '3' :
break ;
}
}
}

void menu()
{
clrscr() ;
gotoxy (15, 5) ; cout << "MENU DATA SISTEM INFORMASI MOTOR";
gotoxy (15, 6) ; cout << "-------------------------------------------------";
gotoxy (15, 7) ; cout << "[1] Mengisi/Membuat File Baru" ;
gotoxy (15, 8) ; cout << "[2] Membaca Data" ;
gotoxy (15,9) ; cout << "[3] Selesai" ;
gotoxy (15,10) ; cout << "-------------------------------------------------";
gotoxy (15,11) ; cout << "PILIHAN : " ;
}

void isi()

{ FILE *coba ;
float atof() ;
int i, n = 0 ;
while(1)
{
clrscr() ;
gotoxy (15, 5) ; cout << "MEMASUKKAN DATA PENJUALAN MOTOR" ;
gotoxy (15, 6) ; cout << "---------------------------------------------------------";
gotoxy (15, 7) ; cout << "Kode\t\t: "; gets(mtr[n].kode);
if (strlen(mtr[n].kode)==0)
break ;
gotoxy (15, 8) ; cout << "Nama\t\t: "; gets(mtr[n].nama) ;
gotoxy (15, 9) ; cout << "Harga\t\t: "; cin >> mtr[n].harga ;
gotoxy (15, 10) ; cout << "Jumlah\t\t: "; cin >> mtr[n].jumlah ;
mtr[n].total= mtr[n].harga * mtr[n].jumlah ;
gotoxy (15, 6) ; cout << "---------------------------------------------------------";
n++ ;
}
coba = fopen("c:\\Motor.Dat", "wb") ;

for ( i=0 ; i {
fwrite(&mtr[i], sizeof(mtr[i]),1,coba) ;
}
fclose(coba) ;
}

void baca()
{
FILE *coba ;
int i=0, n = 0 ;
clrscr() ;
coba = fopen("c:\\Motor.Dat", "rb") ;
if (coba==NULL)
{
gotoxy (20,10) ; cout << "File Motor.Dat belum ada" ;
gotoxy (20,12) ; cout << "Tekan sembarang Tombol" ;
getch() ;
return ;
}
gotoxy (30,1) ; cout << "LAPORAN DATA PENJUALAN MOTOR" ;
gotoxy (5,2) ; cout << "__________________________________________________________________________" ;
gotoxy (6,3) ; cout << "NO";
gotoxy (10,3); cout << "KODE";
gotoxy (25,3); cout << "NAMA";
gotoxy (40,3); cout << "HARGA";
gotoxy (55,3); cout << "JUMLAH";
gotoxy (66,3); cout << "TOTAL";
gotoxy (5,4) ; cout << "__________________________________________________________________________" ;
while( (fread( &mtr[n], sizeof(mtr[n]),1, coba)) ==1 )
{
i++ ;
gotoxy(6 ,4+i) ; cout << i ;
gotoxy(10,4+i) ; cout << mtr[n].kode ;
gotoxy(24,4+i) ; cout << mtr[n].nama;
gotoxy(39,4+i) ; cout < gotoxy(57,4+i) ; cout < gotoxy(65,4+i) ; cout < jumlah += mtr[n].total;
}
gotoxy (5, 5+i) ; cout <<"__________________________________________________________________________" ;
gotoxy(65,6+i) ; cout << setprecision(12)<< jumlah;
gotoxy (40, 6+i) ; cout <<" Total Keseluruhan" ;

getch() ;
fclose(coba) ;
}

Berikut adalah Hasil Outputnya:
1. Menu Utama,,