cpp bukavalak

#include <conio.h>
#include <iostream.h>
#include <stdio.h>
#include <cstring.h>

main()
{
    char pass[20];
    string user;

        login:
        cout<<"\t             +-------------+            \n";
        cout<<"\t ----------> |  Login Page | <----------\n";
        cout<<"\t             +-------------+            \n\n";
        cout<<"\t   Please Login To Your Account ";
        getche();
        cout<<"\n\n";
        cout<<"\t     Username : ";cin>>user;
        cout<<"\t     Password : ";cin>>pass;
        cout<<"\n\n";

            if (user=="andi" && strcmp(pass, "bachok")==0)
            {
                clrscr();
                cout<<"\t             +--------------+            \n";
                cout<<"\t ----------> |  Check Login | <----------\n";
                cout<<"\t             +--------------+            \n\n";
                cout<<"\t   Login Sukses";
                getche();
                clrscr();
                goto mainmenu;
            } else
                {
                    clrscr();
                    cout<<"\t             +--------------+            \n";
                    cout<<"\t ----------> |  Check Login | <----------\n";
                    cout<<"\t             +--------------+            \n\n";
                    cout<<"\t   Login Gagal";
                    getche();
                    clrscr();
                    goto login;
                }
mainmenu:
int kateg, IDproduct, RPproduct, jumbel, ubay, totbay, ukem, IDkurir, RPkurir;
char NMproduct[40], NMkurir[40], ESkurir[40], lanjut[5];
cout<<"\t              +-----------------------+            "<<endl;
cout<<"\t  ----------> |  WELCOME TO BukaValak | <----------"<<endl;
cout<<"\t              +-----------------------+            "<<endl<<endl;

kateg_choose:
cout<<" +----+-----------------------------+"<<endl;
cout<<" | ID |           Kategori          |"<<endl;
cout<<" +----+-----------------------------+"<<endl;
cout<<" |  1 | Aksesoris Komputer          |"<<endl;
cout<<" |  2 | Komponen Jaringan           |"<<endl;
cout<<" |  3 | Software Utility            |"<<endl;
cout<<" +----------------------------------+"<<endl<<endl;

cout<<"    Pilih Kategori : ";cin>>kateg;
    if (kateg==1)
    {
        clrscr();

        akses_comp:
        cout<<"                   +---------------------------+"<<endl;
        cout<<"                   |    Aksesoris Komputer     |"<<endl;
        cout<<" +----+------------+-----------------+---------+----------------+"<<endl;
        cout<<" | ID |           Product            |          Harga           |"<<endl;
        cout<<" +----+------------------------------+--------------------------+"<<endl;
        cout<<" |  1 | FlashDisk 16GB SanDisk       |  Rp 130.000              |"<<endl;
        cout<<" |  2 | 10port Hub USB               |  Rp 150.000              |"<<endl;
        cout<<" |  3 | Card Reader Aio              |  Rp 50000                |"<<endl;
        cout<<" |  4 | Hardisk SATA 320GB WD        |  Rp 300.000              |"<<endl;
        cout<<" |  5 | Mouse logitech Wired         |  Rp 120.000              |"<<endl;
        cout<<" +----+------------------------------+--------------------------+"<<endl<<endl;

        cout<<"    ID Product : ";cin>>IDproduct;
            if (IDproduct==1)
            {
                strcpy(NMproduct, "FlashDisk 16GB SanDisk");
                RPproduct = 130000;
                getche();
                goto kurir;
            } else if (IDproduct==2)
                {
                    strcpy(NMproduct, "10port Hub USB");
                    RPproduct = 150000;
                    getche();
                    goto kurir;
                } else if(IDproduct==3)
                    {
                        strcpy(NMproduct, "Card Reader Aio ( All In One)");
                        RPproduct = 50000;
                        getche();
                        goto kurir;
                    } else if (IDproduct==4)
                        {
                            strcpy(NMproduct, "Hardisk SATA 320GB WD");
                            RPproduct = 300000;
                            getche();
                            goto kurir;

                        } else if (IDproduct==5)
                            {
                                strcpy(NMproduct, "Mouse logitech Wired");
                                RPproduct = 120000;
                                getche();
                                goto kurir;
                            }
                                else
                                {
                                    cout<<"\n";
                                    printf("   Pilih Yang Bener Napa !!! \n");
                                    getche();
                                    cout<<"\n\n";
                                    goto akses_comp;
                                }

    } else
        {
            cout<<"\n";
            printf("   Jan Sembarangan Pilih !!!\n");
            getche();
            goto kateg_choose;
            cout<<"\n\n";

        }
kurir:
cout<<" +------+------------------------------+-------------------+--------------+"<<endl;
cout<<" |  ID  |        Nama Jasa Kirim       |   Estimasi Sampai |     Harga    |"<<endl;
cout<<" +------+------------------------------+-------------------+--------------+"<<endl;
cout<<" |  1   |  JNE REG                     |  3 Hari           |  Rp 13.000   |"<<endl;
cout<<" |  2   |  JNE OKE                     |  1 Hari           |  Rp 22.000   |"<<endl;
cout<<" |  3   |  SiCepat REG                 |  1-2 Hari         |  Rp 13.000   |"<<endl;
cout<<" |  4   |  J&T REG                     |  1-2 Hari         |  Rp 13.000   |"<<endl;
cout<<" +------+------------------------------+-------------------+--------------+"<<endl<<endl;
cout<<"   ID Jasa Kirim : ";cin>>IDkurir;
    if (IDkurir==1)
    {
        strcpy(NMkurir, "JNE REG ( Reguler )");
        strcpy(ESkurir, "3 Hari");
        RPkurir = 13000;

    } else if (IDkurir==2)
        {
            strcpy(NMkurir, "JNE OKE ( Ongkos Kiris Ekonomis )");
            strcpy(ESkurir, "1 Hari");
            RPkurir = 22000;
        } else if (IDkurir==3)
            {
                strcpy(NMkurir, "SiCepat REG ( REGULER )");
                strcpy(ESkurir, "1-2 Hari");
                RPkurir = 13000;
            } else if (IDkurir==4)
                {
                    strcpy(NMkurir, "J&T REG ( Reguler)");
                    strcpy(ESkurir, " 1-2 Hari");
                    RPkurir = 13000;
                } else
                    {
                        cout<<"\n";
                        cout<<"   Pilih Yang Bener Dong !!!";
                        getche();

                        cout<<"\n\n";
                        goto kurir;

                    }
kasir:
cout<<" +---------------------------------------------------------"<<endl<<endl;
cout<<" |   Nama Produk      : "<<NMproduct<<endl;
cout<<" |   Jasa Kurir       : "<<NMkurir<<endl;
cout<<" |   Estimasi         : "<<ESkurir<<endl;
cout<<" |   Harga Ongkir     : Rp "<<RPkurir<<endl;
cout<<" |   Harga Produk     : Rp "<<RPproduct<<endl;
cout<<" |   Jumlah Beli      : ";cin>>jumbel;
    totbay = (jumbel*RPproduct)+RPkurir;
cout<<" |   Total Bayar      : Rp "<<totbay<<endl;
cout<<" |   Uang Bayar       : Rp ";cin>>ubay;
    ukem = ubay-totbay;
cout<<" |   Uang Kembalian   : Rp "<<ukem<<endl<<endl;
cout<<" +---------------------------------------------------------"<<endl;
    if (ubay<totbay)
    {
        cout<<"\n\n";
        cout<<"   Uang Anda Kurang !!!! Lanjut Bayar ? [Y/T] : ";cin>>lanjut;

            if (lanjut=="Y" || lanjut=="y")
                {
                    clrscr();
                    goto kasir;
                } else if (lanjut=="T" || lanjut=="t")
                    {
                        cout<<"\n\n";
                        cout<<"   Gk Jadi Beli Mending Mati Saja";
                        goto end;

                    }
    }
cout<<"\n\n";
cout<< "   Thanks For Order";
end:
getch();
}