Program Penghitung IPK Mahasiswa (C++)

"iostream.h"
"conio.h"
"stdio.h"

void main()
{
char nama[30],kuliah[30],nim[10],kls[10],pro[20];
float nilai,total,ipk,jumlah;
int i,banyak;

cout<<"Program Penghitung IPK Mahasiswa\n";
cout<<"=========================\n\n";

cout<<"Ket : Gunakan Huruf Kapital\n";
cout<<"Jumlah Mata Kuliah Anda      : "; cin>>banyak;
cout<<"\n";
cout<<"Nama Mahasiswa               : "; cin>>nama;
cout<<"NIM                          : "; cin>>nim;
cout<<"Kelas                        : "; get(kls);
cout<<"Program Studi                : "; gets(pro);
jumlah=0;
cout<<"\n";
for (i=1;i<=banyak;i+)
{
cout<<"\nMasukkan Nama Mata Kuliah    : " ; cin >> kuliah ;
cout<<"Masukkan Nilai               : " ; cin >> nilai ;
total=jumlah+nilai
}                   ;
ipk=total/banyak;
cout<<"\n";
cout<<"================================\n";
cout<<"\nTotal Nilai Anda             : " << total ;
cout<<"\nNilai Rata-Rata Anda         : " << ipk;
cout<<"\n";
if (ipk==4)
cout<<"\nAnda Mendapat Nilai = A";
else
if (ipk==3)
cout<<"\nAnda mendapat Nilai = B";
else
if (ipk==2)
cout<<"\nAnda mendapat Nilai = C";
else
cout<<"\nAnda mendapat Nilai = D";
getch();
}