Cara Menghitung Harga, Diskon dan Jumlah

Percobaan :

#include <iostream>
using namespace std;
void main()
{
long int n;
 float harga,total_belanja,total_bayar,diskon, jumlah=0 ;
cout<<"=================================\n";
cout<<"Masukkan jumlah barang : ";cin>>n;
cout<<"=================================\n";
for (int i=1;i<=n;i++){
    cout<<"Masukkan harga barang ke- "<<i<<" : Rp. ";cin>>harga;
    cout<<"=================================\n";
}
total_belanja=jumlah+harga;
cout<<"jadi, total belanjanya adalah : "<<total_belanja<<""<<endl;

if(total_belanja> 1000000)
      diskon = 10*harga/100;    //dison 10%
else if (harga<= 100000)
cout<<"Maka Total Bayarnya adalah :" <<total_belanja-diskon<<endl;
cout<<" TERIMA KASIH \n";
 system ("pause");
}

Yang bener adalah :

#include <iostream>
using namespace std;
void main()
{
long int total_belanja=0;
 float harga,total_bayar,diskon,n;
cout<<"=================================\n";
cout<<"Masukkan jumlah barang : ";cin>>n;
cout<<"=================================\n";
for (int i=1;i<=n;i++){
    cout<<"Masukkan harga barang ke- "<<i<<" : Rp. ";cin>>harga;
    // hitung total belanja
    cout<<"=================================\n";
total_belanja=jumlah+harga;
}
if(total_belanja> 1000000)
    diskon = 10*total_belanja/100;    //dison 10%
else
    diskon=0;
total_bayar=total_belanja - diskon;
cout<<"Total Belanja = Rp "<<total_belanja<<endl;
cout<<"=================================\n";
cout<<"Diskon        = Rp " <<diskon<<endl;
cout<<"=================================\n";
cout<<"Total Bayar   = Rp " <<total_bayar<<endl;
cout<<"======TERIMA KASIH========\n";
 system ("pause");
}

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