Penginapan Pasti Betah Program C++

#include<stdio.h>
#include<conio.h>
#include<iostream.h>
main()
{
char nama[20], kode, lagi;
int inap, biaya1, biaya2, total, bayar, kembali;
atas:
clrscr();
cout<<"              Penginapan Pasti Betah";
cout<<"\n==================================================";
cout<<"\nnama penyewa         : ";
cin>>nama;
cout<<"\nkode kamar (A/B/M)   : ";

cin>>kode;
if(kode=='A')
{
clrscr();
cout<<"\n            Penginapan Pasti Betah";
cout<<"\n==================================================";
cout<<"\nNama Penyewa         :"<<nama;
cout<<"\nKode Kamar (A/B/M)   : " <<kode;
cout<<"\nLama Menginap        : ";
cin>>inap;
cout<<"\n==================================================";
cout<<"\nTipe Kamar           : Anggrek";
cout<<"\nlama menginap        : " <<inap;
cout<<"hari";

if(inap>=7)
{
cout<<"\nSouvenir             : Payung Cantik";
}
else
biaya1=300000;
biaya2=200000;
cout<<"\nBiaya Sewa           :"<<biaya1;
cout<<"\nBiaya Administrasi   :"<<biaya2;
total=(biaya1*inap)+biaya2;
cout<<"\nTotal Biaya Sewa     :"<<total;
cout<<"\n===================================================";
cout<<"\nUang Bayar           : ";
cin>>bayar;
if(bayar<total)
{
cout<<"Maaf uang anda tidak mencukupi";
goto bawah;
}
else
kembali=bayar-total;
cout<<"\nUang Kembali         : "<<kembali;
cout<<"\nIngin Input Lagi Y/T : ";
cin>>lagi;
if(lagi=='y'||lagi=='Y')
goto atas;
else
goto bawah;
}

else if(kode=='B')
{
clrscr();
cout<<"\n            Penginapan Pasti Betah";
cout<<"\n====================================================";
cout<<"\nNama Penyewa         :"<<nama;
cout<<"\nKode Kamar (A/B/M)   : " <<kode;
cout<<"\nLama Menginap        : ";
cin>>inap;
cout<<"\n====================================================";
cout<<"\nTipe Kamar           : Bougenville";
cout<<"\nlama menginap        : " <<inap; cout<<"hari";
if(inap>=7)
{
cout<<"\nSouvenir             : Payung Cantik";
}
else
biaya1=250000;
biaya2=200000;
cout<<"\nBiaya Sewa           :"<<biaya1;
cout<<"\nBiaya Administrasi   :"<<biaya2;
total=(biaya1*inap)+biaya2;
cout<<"\nTotal Biaya Sewa     :"<<total;
cout<<"\n====================================================";
cout<<"\nUang Bayar           : ";
cin>>bayar;
if(bayar<total)
{
cout<<"Maaf uang anda tidak mencukupi";
goto bawah;
}
else
kembali=bayar-total;
cout<<"\nUang Kembali         : "<<kembali;
cout<<"\nIngin Input Lagi Y/T : ";
cin>>lagi;
if(lagi=='y'||lagi=='Y')
goto atas;
else
goto bawah;
}
else if(kode=='M')
{
clrscr();
cout<<"\n              Penginapan Pasti Betah";
cout<<"\n=====================================================";
cout<<"\nNama Penyewa:"<<nama;
cout<<"\nKode Kamar (A/B/M)   : " <<kode;
cout<<"\nLama Menginap        : ";
cin>>inap;
cout<<"\n=====================================================";
cout<<"\nTipe Kamar           : Mawar";
cout<<"\nlama menginap        : " <<inap; cout<<"hari";
if(inap>=7)
{
cout<<"\nSouvenir             : Payung Cantik";
}
else
biaya1=200000;
biaya2=200000;
cout<<"\nBiaya Sewa           :"<<biaya1;
cout<<"\nBiaya Administrasi   :"<<biaya2;
total=(biaya1*inap)+biaya2;
cout<<"\nTotal Biaya Sewa     :"<<total;
cout<<"\n=====================================================";
cout<<"\nUang Bayar           : ";
cin>>bayar;
if(bayar<total)
{
cout<<"Maaf uang anda tidak mencukupi";
goto bawah;
}
else
kembali=bayar-total;
cout<<"\nUang Kembali : "<<kembali;
cout<<"\nIngin Input Lagi Y/T : ";
cin>>lagi;
if(lagi=='y'||lagi=='Y')
goto atas;
else
goto bawah;
}
else
cout<<"kode yang anda masukan salah";
cout<<"\nIngin Input Lagi Y/T : ";
cin>>lagi;
if(lagi=='y'||lagi=='Y')
goto atas;
else
goto bawah;
bawah :
getch();
}