Perpustakaan kecil-kecilan

using namespace std;
#include <iostream>
#include <iomanip>
#include <string.h>
inline void baris();
void tampil();
int tarif (char kobu[], char jebu[], int bapin, int *jumbay, int *tabu);

main()
{
    char nama[30], kobu[2], jebu[30];// kobu = kode buku, jebu = jenis buku
    int tabu=0, jumbay=0, bapin=0;// tabu = tarif buku, jumbay = jumlah bayar, bapin = banyak pinjam
    cout<<"by : dedi susanto"<<endl<<endl;
    tampil();
    cout<<endl<<endl<<"\t\t\tPerpusatakaan Kecil-kecilan"<<endl;
    cout<<"---------------------------"<<endl;
    cout<<"Nama Penyewa Buku\t : ";cin.getline(nama,30);
    cout<<"Kode Buku [C/K/N]\t : ";cin>>kobu;
    cout<<"Banyak Pinjam\t\t : ";cin>>bapin;

    tarif(kobu, jebu, bapin, &jumbay, &tabu);
    system("cls");
    cout<<"Tarif Sewa\t\t\t : Rp. "<<tabu<<endl;
    cout<<"Jenis Buku\t\t\t : "<<jebu<<endl;
    cout<<"Penyewa dengan Nama\t\t : "<<nama<<endl;
    cout<<"Jumlah Bayar Penyewaan Sebesar\t : Rp. "<<jumbay<<endl;
}

void baris()
{
    cout<<setfill('-')<<setw(70)<<"-"<<endl<<setfill(' ');
}

void tampil()
{
    baris();
    cout<<setiosflags(ios::left)<<setw(20)<<"| Kode Jenis Buku";
    cout<<setw(35)<<"|            jenis Buku"<<setw(15)<<"| Tarif Buku"<<"|"<<endl;
    baris();
    cout<<setw(20)<<"|        C"<<setw(35)<<"| CerPen (Kumpulan Cerita Pendek)";
    cout<<setw(15)<<"|    500"<<"|"<<endl;
    baris();
    cout<<setw(20)<<"|        K"<<setw(35)<<"| Komik";
    cout<<setw(15)<<"|    700"<<"|"<<endl;
    baris();
    cout<<setw(20)<<"|        N"<<setw(35)<<"| Novel";
    cout<<setw(15)<<"|    1000"<<"|"<<endl;
    baris();
}

int tarif (char kobu[], char jebu[], int bapin, int *jumbay, int *tabu)
{
    if(strcmp(strupr(kobu),"C")==0)
    {
        strcpy(jebu,"CerPen (Kumpulan Cerita Pendek)");
        *tabu=500;
    }

    else if(strcmp(strupr(kobu),"K")==0)
    {
        strcpy(jebu,"Komik");
        *tabu=700;
    }

    else if(strcmp(strupr(kobu),"N")==0)
    {
        strcpy(jebu,"Novel");
        *tabu=1000;
    }

    else
    {
        strcpy(jebu,"-");
        *tabu=0;
    }

    *jumbay=*tabu * bapin;
}