C++ Sentinel

C++ Sentinel
#include
#include
main() {
int n = 1, jumlah = 0, x;
float rata;
cout<<"Data ke-1 : "; cin>>x;
while(x>0) {
jumlah += x;
cout<<"Data ke- : "<< n+1; cin>>x;
n++;
}
rata=(float)jumlah/(n-1);
cout << "Rata-rata = " << rata;
getch();
return 0;
}