//Accumulator3.cpp
//  tom bailey   25 sep 06

// Request n.
// Print the sum of the integers from 1 to n.
// Print the mean of (the sum of the integers from 1 to k)
//   for all k from 1 to n.

// Use objects of the accumulator classes Summer and
//    Averager to track the sum and average properties of
//    the sequences.

#include <iostream>
using std::cin;
using std::cout;
using std::endl;
#include "MyAccumulators2.h"

int main() {
	Summer sum;
	Averager average;

	cout << "Enter last integer in sequence: ";
	int n;
	cin >> n;

	for( int i=1; i<=n; ++i ) {
		sum.append( i );
		average.append( sum() );
	}
	cout << "The sequence is 1 ... " << n << endl;
	cout << "Its sum is " << sum() << endl;
	cout << "The mean of all the partial sums is " << 
		average() << endl;

	return 0;
}