#include <iostream.h>
#include <fstream.h>

main ( int argc, char *argv[] ) {
  if ( argc !=2 ) {
    cerr << "usage: " << argv[0] << " <filename>" << endl;
    cerr << "        where <filename> is a file of integers separated"
	 << endl << "        by white space.." << endl;
    
    exit(1);
  }
  ifstream fin(argv[1]);
  if (!fin) {
    cerr << "Error opening " << argv[1] << endl;
    exit(2);
  }
  
  int tmp;
  int count=0;
  int sum=0;
  float average;

  while (fin) {
    fin >> tmp;
    count++;
    sum=sum+tmp;
  }

  average=(((float)sum) / ((float)count));
  cout << count << " numbers totaled " << sum << ", average = " << average 
       << endl;
  return 0;
}