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| #include <iostream>
#include <string>
#include <vector>
using std::cout;
using std::cin;
using std::endl;
using std::string;
using std::vector;
class Store
{
public:
Store() = default;
Store(const string & _seller, const string & _name, const size_t _amount, const float _price, const int _year) :
seller(_seller), name(_name), amount(_amount), price(_price), year(_year) {}
size_t get_amount() const
{
return amount;
}
float get_price() const
{
return price;
}
int get_year() const
{
return year;
}
friend std::istream & operator>>(std::istream & str, Store & obj)
{
cout << "Продавец: "; getline(str, obj.seller);
cout << "Наименование: "; getline(str, obj.name);
cout << "Количество: "; str >> obj.amount;
cout << "Цена: "; str >> obj.price;
cout << "Год продажи: "; str >> obj.year;
return str;
}
friend std::ostream & operator<<(std::ostream & str, const Store & obj)
{
str << "Продавец: " << obj.seller << endl;
str << "Наименование: " << obj.name << endl;
str << "Количество: " << obj.amount << endl;
str << "Цена: " << obj.price << endl;
str << "Год продажи: " << obj.year << endl;
return str;
}
private:
string seller{};
string name{};
size_t amount{};
float price{};
int year{};
};
void total_info(vector<Store> & mas, const int _year)
{
float total_price{};
size_t total_amount{};
for (size_t i{}; i < mas.size(); i++)
{
Store obj(mas[i]);
if (obj.get_year() == _year)
{
cout << endl << obj << endl;
for (size_t j{1}; j <= obj.get_amount(); j++)
{
total_price += obj.get_price();
}
total_amount += obj.get_amount();
}
}
if (total_price)
{
cout << "Общее количество проданного товара: " << total_amount << endl;
cout << "Общая сумма с продаж: " << total_price << endl;
}
else
{
cout << "За данный год ничего не продано." << endl;
}
}
int main()
{
setlocale(LC_ALL, "rus");
Store o1("Apple", "X", 2, 352.45, 2017);
Store o2("Samsung", "S9", 1, 297.49, 2017);
vector<Store> mas;
mas.reserve(2);
mas.push_back(o1);
mas.push_back(o2);
cout << "Год продажи: ";
int year;
cin >> year;
total_info(mas, year);
return 0;
} |
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