// con1.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>

using namespace std;

int main()
{
	// Version 1: ask the user to enter -1 to end the list
	int sum=0, count=0, inputNum=100; // 100 just to make sure you enter the loop
	double average;

	while (inputNum >= 0) {
		cout << "Enter the next number (-1 to end): ";
		cin >> inputNum;
		sum += inputNum;
		count++;
	}

	// clean up: make sure -1 doesn't affect count or sum

	average = (double)sum / count;
	cout << "The average of the " << count << " numbers that you entered is:"
		<< average << endl;

	return 0;
}