program kasir penginapan dengan c++

Tugas membuat program kasir penginapan 

dengan C++

#include <conio.h>
#include <iostream.h>
main()
{

char np[35],suv[30],lagi,tpy[50],kk[20];
int harga,ttl,lm,jumlah,total,ba,uk,ub;
lagi='y';

atas:
cout<<"PENGINAPAN PASTI BETAH\n";
cout<<"****************************\n";


cout<<"nama penyewa\t:";
cin>>np;
cout<<"kode kamar[A/B/M]\t:";
cin>>kk;
cout<<"lama menginap\t:";
cin>>lm;


clrscr();
cout<<"PENGINAPAN PASTI BETAH\n";
cout<<"****************************\n";
if(strcmp(kk,"A")==0||strcmp(kk,"a")==0)
{strcpy (tpy,"anggrek");
harga=300000;
}

else if(strcmp(kk,"B")==0||strcmp(kk,"b")==0)
{strcpy (tpy,"bougenville");
harga=250000;
}
else if(strcmp(kk,"M")==0||strcmp(kk,"m")==0)
{strcpy (tpy,"mawar");
harga=200000;
}
else
{
cout<<"\n\nMAAF KODE YANG ANDA MASUKAN SALAH"<<endl<<endl;
cout<<"\n\n\n\n\n\t\t\t\t\tinput ulang [Y/T]?:";cin>>lagi;
if(lagi=='Y'||lagi=='y')
goto atas;
else
goto bawah;
}

cout<<"nama penyewa\t\t:"<<np<<endl;
cout<<"kode kamar [A/B/M]\t:"<<kk<<endl;
cout<<"lama menginap \t\t:"<<lm<<endl;
cout<<"****************************\n";
cout<<"type kamar \t\t:"<<tpy<<endl;
cout<<"lama menginap \t\t:"<<lm;  cout<<"hari\n";
if(lm>=7)
{strcpy(suv,"payung");}
else
{
  strcpy(suv, "Maaf Anda Tidak Dapat suvenir"); }

cout<<"souvenir\t\t:"<<suv<<endl;
ba=200000;
cout<<"biaya administrasi\t:"<<ba<<endl;
total=lm*harga+ba;
cout<<"total sewa\t\t:"<<total<<endl;
cout<<"*********************************\n";
cout<<"uang bayar\t\t:";
cin>>ub;
uk=ub-total;
cout<<"uang kembali\t\t:"<<uk<<endl;
cout<<"  \n\n\n\n\t\t\t\t\    INGIN INPUT LAGI [Y/T]?:";cin>>lagi;
if(lagi=='Y'||lagi=='y')

goto atas;
else
goto bawah;
bawah:
{
clrscr();
cout<<"\n\n\n\n\n\t\t==================================\n ";
cout<<"\t\t\t....TERIMAKASIH....\n ";
cout<<"\t\t================================== ";
}
getch();
}

hasil:

Semoga Bermanfaat.....!!!!!!!!!!!!!!!!!1