/* break2.cpp */
#include <stdio.h>
#include <iostream.h>
#include <string>
using namespace std;

int main(void)
{
  int summa=0,luku; string s;
  cout << "Anna lukuja.  Summaan niit„ kunnes annat 0 tai summa > 20\n";
  while ( summa <= 20 ) {
    cout << "Anna luku>";
    getline(cin,s);
    if ( sscanf(s.c_str(),"%d",&luku) < 1 ) break;
    if ( luku == 0 ) break;
    summa += luku;
  }
  cout << "Lukujen summa on " << summa << endl;
  return 0;
}