//  Bob Myers
//
//  count.cpp
//  Example that reads in any file consisting of ANY number of integers,
//   separated by any amount of white space.  The program will read in
//   all the integers, and compute their sum and their average

#include <iostream>
#include <iomanip>    // for setw
#include <fstream>    // for ifstream, ofstream

using namespace std;

int main()
{
   char filename[25];      // a string for filename entry

   int val;		   // for reading integers from file
   int sum = 0, count = 0;		
   double average;

   ifstream in1;        // create an input file stream

   do
   {
      in1.clear();
      cout << "Please enter the name of the input file.\n";
      cout << "Filename:  ";
      cin >> setw(25) >> filename;
	        
      in1.open(filename);
      if (!in1)
         cout << "That is not a valid file.  Try again!\n";

   } while (!in1);

   // PROCESS THE INPUT FILE
   //  Read all integer values and compute average

   while (!in1.eof())	     // while not end of file
   {
      in1 >> val;	     // read an integer from file

      if (!in1.fail())	     // in case last call failed to read an int
      {			     //  due to trailing white space at end of file
	count++;
        sum += val;
      }
   }

   average = static_cast<double>(sum) / count;

   cout << "There were " << count << " numbers in the file\n";
   cout << "Sum = " << sum << "\t\tAverage = " << average << "\n\n";

   in1.close();

   return 0;
}