Contoh program penjualan (c++)

#include "conio.h"
#i nclude "iostream.h"
#include "stdio.h"
main()
{
struct
   {
   char kosir[3], nasir[30], pasword[7];
   }ksr;

   struct
   {
   char kobar, nabar[20];
   int harga, jumli, total, bayar, kembali;
   }brng;



   char awal, ulang;

   awal:
   clrscr();
puts("----------------------------------------------");
puts("*   PROGRAM PENJUALAN SEPATU PADA MATAHARI   *");
   puts("----------------------------------------------");
   puts("[1] Input Kasir");
   puts("[2] Input Barang");
   puts("[3] Exit");
   cout<<"Pilih Kode Menu [1/2/3] : ";cin>>awal;
if (awal=='1')
    goto satu;
   else
   if (awal=='2')
    goto dua;
   else
    goto tiga;

   satu:
   clrscr();
   puts("----------------------------------------------");
   puts("*                 FORM KASIR                 *");
   puts("----------------------------------------------");
cout<<"Kode Kasir [BDM/ASS/RNI] : ";gets(ksr.kosir);
   if ((!strcmp (ksr.kosir, "BDM"))||(!strcmp (ksr.kosir, "bdm")))
      {strcpy (ksr.nasir, "Budi Mustofa");}
   else
   if ((!strcmp (ksr.kosir, "ASS"))||(!strcmp (ksr.kosir, "ass")))
    {strcpy (ksr.nasir, "Asep Setiawan");}
else
    {strcpy (ksr.nasir, "Rini Indriani");}

   cout<<"Nama Kasir : "<<ksr.nasir<<endl;
   cout<<"Password   : ";gets(ksr.pasword);
   if (!strcmp (ksr.pasword, "123456"))
    {cout<<"Password Benar"<<endl;}
   else
    {cout<<"Maaf, Password Salah"<<endl;
      goto tiga;}
puts("----------------------------------------------");
   cout<<"Mau input lagi [Y/T] : ";cin>>ulang;
   if (ulang=='Y'||ulang=='y')
    goto satu;
   else
    goto awal;

   dua:
   clrscr();
   puts("----------------------------------------------");
   puts("*                FORM BARANG                 *");
   puts("----------------------------------------------");
   puts("[A] Bata");
   puts("[B] Nevada");
   puts("[C] Homyped");
   cout<<"Kode Barang [A/B/C] : ";cin>>brng.kobar;
   if (brng.kobar=='A'||brng.kobar=='a')
    {strcpy (brng.nabar, "Bata");
      brng.harga=90000;}
   else
   if (brng.kobar=='B'||brng.kobar=='b')
    {strcpy (brng.nabar, "Nevada");
      brng.harga=100000;}
   else
    {strcpy (brng.nabar, "Homyped");
      brng.harga=150000;}

puts("----------------------------------------------");
   cout<<"Nama Barang  : "<<brng.nabar<<endl;
   cout<<"Harga Barang : Rp. "<<brng.harga<<endl;
   cout<<"Jumlah Beli  : ";cin>>brng.jumli;
   brng.total=brng.harga*brng.jumli;
   cout<<"Total Bayar  : Rp. "<<brng.total<<endl;
   cout<<"Uang Bayar   : Rp. ";cin>>brng.bayar;
   brng.kembali=brng.bayar-brng.total;
   cout<<"Uang Kembali : Rp. "<<brng.kembali<<endl;
   puts("----------------------------------------------");
   cout<<"Transaksi lagi [Y/T] : ";cin>>ulang;
   if (ulang=='Y'||ulang=='y')
    goto dua;
   else
    goto awal;

   tiga:
   cout<<endl;
   cout<<"***** TERIMA KASIH *****";
getch();
}