text: // sumafile.cpp -- functions with an array argument
  #include <iostream>
  #include <fstream>          // file I/O support
  #include <cstdlib>          // support for exit()
  const int SIZE = 60;
  int main()
  {
      using namespace std;
      char filename[SIZE];
      ifstream inFile;        // object for handling file input
  
      cout << "Enter name of data file: ";
      cin.getline(filename, SIZE);
      inFile.open(filename);  // associate inFile with a file
      if (!inFile.is_open())  // failed to open file
      {
          cout << "Could not open the file " << filename << endl;
          cout << "Program terminating.\n";
          cin.get();    // keep window open
          exit(EXIT_FAILURE);
      }
      double value;
      double sum = 0.0;
      int count = 0;          // number of items read
  
      inFile >> value;        // get first value
      while (inFile.good())   // while input good and not at EOF
      {
          ++count;            // one more item read
          sum += value;       // calculate running total
          inFile >> value;    // get next value
      }
      if (inFile.eof())
          cout << "End of file reached.\n";
      else if (inFile.fail())
          cout << "Input terminated by data mismatch.\n";
      else
          cout << "Input terminated for unknown reason.\n";
      if (count == 0)
          cout << "No data processed.\n";
      else
      {
          cout << "Items read: " << count << endl;
          cout << "Sum: " << sum << endl;
          cout << "Average: " << sum / count << endl;
      }
      inFile.close();         // finished with the file
      // cin.get();
  
      system("PAUSE");
  	return 0;
  }
  