diskon harga

#include <iostream>
#include <cstdlib>
using namespace std;

int main()
{
    //VARIABLE NILAI DAN DISKON
    int nilai,diskon;
    //VARIABLE BARANG YANG DIBELI
    int barang, barang2, barang3, barang4, barang5, barang6, barang7;
    system("clear");
        //masukkan harga barang, maksimal 7 barang per sesi
        cout << "MAKSIMAL 7 BARANG PER SESI\n\n";
        cout << "Barang 1 : IDR ";
        cin >> barang;
        cout << "Barang 2 : IDR ";
        cin >> barang2;
        cout << "Barang 3 : IDR ";
        cin >> barang3;
        cout << "Barang 4 : IDR ";
        cin >> barang4;
        cout << "Barang 5 : IDR ";
        cin >> barang5;
        cout << "Barang 6 : IDR ";
        cin >> barang6;
        cout << "Barang 7 : IDR ";
        cin >> barang7;
        nilai = barang + barang2 + barang3 + barang4 + barang5 +barang6 + barang7;
        cout << "\n\n";
        //keterangan
        cout << "Total Pembelian Anda : IDR " << nilai << "\n\n";
            //proses hitung diskon
            if(nilai >= 20000 && nilai <= 499999) {
                diskon = nilai * 5/100;
                cout << "Setelah dikurangi Potongan harga 5% maka mendapat Harga : IDR " << diskon;
            }
            else if( nilai >= 500000){
                diskon = nilai * 40/100;
                cout << "Setelah dikurangi Potongan harga 40% maka mendapat Harga : IDR " << diskon;
            }
            else if(nilai <= 20000) {
                cout << "Tidak mendapat Potongan Harga";
            }
    cout << "\n";
    return 0;
}