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

int main()
{
    float x;
    unsigned short num_scores, icnt;
    ifstream infile;  // Declare infile as as input file stream object
    
    float sum = 0.0;
    
    infile.open( "data.dat" );  // Open data.dat
                                /// and connect it to infile
    
    if ( infile.fail() ) {  // Check to see if connection was made
        cout << "** The file data.dat could not be opened **\n";
        system( "PAUSE" );
        exit( EXIT_FAILURE );
    }
    
    cout << "Enter the number of scores in file data.dat\n";
    cin >> num_scores;
    cout << endl;
    
    for ( icnt = 1; icnt <= num_scores; icnt++ ) {
        infile >> x;
        sum += x;
    }
    
    cout << "The average of the scores is "
         << sum / float( num_scores );
         
    cout << "\n\n"; system( "PAUSE" );
    return( EXIT_SUCCESS );
}