#include <iostream>
using namespace std;

int main()
{
    int num1, num2, subtotal, average, total;

    cout << "Enter integers for start and finish in pairs until start > finish";
    cout << ", which terminates the program or when EOF or an invalid input";
    cout << "has been made." << endl << endl;
    cout << "Enter start and finish integers -> ";
    cin >> num1 >> num2;
    total = 0;
    if(cin.eof()) cout << "EOF..." << endl;
    if(cin.fail()) cout << "FAIL..." << endl;
    while (num1 <= num2)
    {
       subtotal = (num1 * num1);
       total = subtotal + total;
       num1++;
       cout << "SUBTOTAL = " << subtotal << endl; // TESTING PURPOSES
       cout << "TOTAL = " << total << endl; // TESTING PURPOSES
    }
    if (num1 > num2)
    {
       average = (total / 2);
       cout << "TOTAL = " << total << endl;
       cout << "AVERAGE = " << average << endl;
    }
    system("pause");

    return 0;
}