#include <iostream.h>
int main()
{ // Demonstrate break for loop termination (P267.CPP)
  int test;
  int n = 0;
  cout << "Enter tests or a negative integer or end of file to quit\n";
  while(1)  // an intentional infinite loop
  {
    cin >> test;
    if(cin.eof() || test < 0)  // Terminate loop on either event
      break;
    n++;
  }
  cout << "\nNumber of tests = " << n << endl;
  return 0;
}