/* program demonstrating simple input from a file
 *
 * it just reads lines numbers in from a file and averages them
 */

#include <iostream>
#include <fstream>
#include <string>
#include <stdio>		// for exit()
#include <conio>
using namespace std;

int main() {

	// declare the stream object and connect it to input file
	ifstream fin("scores.txt");

	// check for problems (fin is null if there was a problem)
	if (!fin) {
		cerr << "could not open scores.txt\n";
		exit(-1);
	}

	// get the sum by reading through the file
	int counter=0;
	int val, valSum=0.0;

	while (fin >> val) {  // >> will return null when EOF is reached
		valSum += val;
		counter++;
	}

	// if we had more than 0 entries, print the sum
	if (counter) {
		cout << counter << " numbers found";
		cout << " with an average of " << valSum / (double)counter << endl;
	}
	else
		cout << "no values found in file." << endl;

	fin.close();

	cout << "hit a key.";
	getch();
}