#include <iostream>
using namespace std;

int main() 
{
	int summand;
	int sum = 0;
	do {
		cout << "Aktuelle Zwischensumme : " << sum << endl;
		cout << "Nächster Summand (0 für Abbruch) = ";
		cin >> summand;
		sum = sum + summand;
	} while (summand != 0);
	return 0;
}