#include <iostream.h>
#include <limits.h>
#include <fstream.h>
#include "CPstring.h"

// file: stats3.cc; author: D. Ramm; date: 10/15/96
// file input; while with EOF to exit
// initialization from limits.h
// move count to function with reference parameter
// stats and other things

void Count(int & tally)
{
   tally++;
}
   
int main()
{
   int number, count = 0;
   int sum = 0, max = INT_MIN, min = INT_MAX;
   string filename;
   ifstream filein;

   cout << "Enter file name: ";
   cin >> filename;

   filein.open(filename);

   while (filein >> number)
   {
      Count(count);
      cout << "Do something with number: " << number << endl;
   }
   if (count == 0)
      cout << "No data found in file " << filename << endl;
   else
      cout << count << " numbers were read." << endl;

   return 0;
}

Sample output:

stats3
Enter file name: data
Do something with number: 1
Do something with number: 2
Do something with number: 4
Do something with number: 7
Do something with number: -2
Do something with number: 33
Do something with number: -11
Do something with number: 12
8 numbers were read.