#include <iostream>
#include <cstdlib>
#include <fstream>
#include <iomanip>
using namespace std;

int main()
{
    char file_name[81];
    float x, sum = 0.0;
    int cnt = 0;
    ifstream infile;
    
    cout << "Enter the name of the file.\n";
    cin >> file_name;
    cout << endl;
    
    infile.open( file_name );
    
    if ( infile.fail() ) {
         cout << "The file `" << file_name << "' could not be opened.\n";
         system( "PAUSE" );
         exit( EXIT_FAILURE );
    }
    
    cout.setf( ios::scientific );
    cout.setf( ios::right);
    cout.precision(5);

    infile >> x;
    while ( !infile.eof() ) {
          cnt++; sum += x;
          cout << setw(13) << x << "\n";
          infile >> x;
    }
    
    cout << "\nThere were " << cnt << " numbers read.\n";
    cout << "The mean is " << sum / cnt << "." << endl;
    
    cout << "\n\n"; system( "PAUSE" );
    return( EXIT_SUCCESS );
}