c++ Program penginapan hotel

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

main()
{
char kode,nm_penginap[15],kd_kls,nm_kamar[8],nm_kls[8],kamar[10],lagi;
int  lama,by_tambahan;
long harga,total;
awal:
cout<<"=================================================="<<endl;
cout<<"\tHOTEL BINA SARANA INFORMATIKA \n";
cout<<"=================================================="<<endl;
cout<<"Nama Penginap : ";gets(nm_penginap);
cout<<"=================================================="<<endl;
cout<<"Pilihan Kamar :\n";
cout<<"\t\tA.MAWAR \n";
cout<<"\t\tB.MELATI \n";
cout<<"\t\tC.ANGGREK \n";
cout<<"==================================================="<<endl;
cout<<"\nInput Pilihan Kamar [A/B/C] : ";cin>>kode;
cout<<"Input Pilihan Kelas [1/2]   : ";cin>>kd_kls;
cout<<"Lama Menginap               : ";cin>>lama;

    switch (kode)
   {
    case 'A':
   case 'a':
   strcpy(nm_kamar,"MAWAR");
   harga=250000;
    break;
   case 'B':
   case 'b':
   strcpy(nm_kamar,"MELATI");
    harga=200000;
    break;
    case 'C':
   case 'c':
   strcpy(nm_kamar,"ANGGREK");
   harga=150000;
   break;
   }
{
if (kd_kls=1)
{strcpy(nm_kls,"VIP");
by_tambahan=25000;}
if(kd_kls=2)
{strcpy(nm_kls,"REGULER");
by_tambahan=0;}
 }
total=lama*harga+(lama*by_tambahan);

clrscr();

cout<<"=========================================="<<endl;
cout<<"\tHOTEL BINA SARANA INFORMATIKA \n";
cout<<"=========================================="<<endl;
cout<<"Nama  Penginap : "<<nm_penginap<<endl;
cout<<"Nama  Kamar    : "<<nm_kamar<<endl;
cout<<"Jenis Kelas    : "<<nm_kls<<endl;
cout<<"Harga Kamar    : "<<harga<<endl;
cout<<"Biaya Tambahan : "<<by_tambahan<<endl;
cout<<"Lama  Inap     : "<<lama;printf("\thari\n");
cout<<"=========================================="<<endl;
cout<<"Total          : "<<total;
cout<<"\n=========================================="<<endl;
cout<<"\n\tINGIN INPUT LAGI [Y/T] : "; cin>>lagi;
if (lagi == 'y' || lagi =='Y')
goto awal;
getch();
}