exercise2_42_3.cpp

#include <iostream>
#include "exercise2_42.h"

int main()
{
	Sales_data total;
	double totalPrice;
	if (std::cin >> total.bookNo >> total.units_sold >> totalPrice)
	{
		total.CalcRevenue(totalPrice);
		Sales_data trans;
		double transPrice;
		while (std::cin >> trans.bookNo >> trans.units_sold >> transPrice)
		{
			trans.CalcRevenue(transPrice);
			if (total.bookNo == trans.bookNo)
			{
				total.AddData(trans);
			}
			else
			{
				total.Print();
				total.SetData(trans);
			}
		}
		total.Print();
		return 0;
	}
	else
	{
		std::cerr << "No data?!" << std::endl;
		return -1;  
	}
}