Exer02_42_1.cpp

// Rewrite of Exer1.20
#include <iostream>
#include "Sales_data.h"
int main()
{
    Sales_data book;
    double price = 0;
    while(std::cin >> book.bookNo >> book.units_sold >> price)
    {
        book.revenue = price * book.units_sold;
        std::cout << book.bookNo << " "
                  << book.units_sold << " "
                  << book.revenue << std::endl;
    }

    return 0;
}