t.cpp

#include <algorithm>
#include <string>
#include <vector>
#include <windows.h>

#pragma GCC diagnostic ignored "-Wwrite-strings"

using namespace std;

class Purchase {
	private: 
		unsigned int 			cost;
		unsigned int			amount;
		unsigned short 			day;
		unsigned short 			dtype;
		unsigned int			dvalue;
		constexpr static char 	dictionary[][30] = {
			"Полная стоимость",
			"Скидка %u%%",
			"Скидка на доставку %u руб.",
			"Другой товар на %u руб."
		};

		
	public:
		Purchase(unsigned int c, unsigned int a, unsigned short d, unsigned short dt, unsigned int dv) {
			cost = c;
			amount = a;
			day = d;
			dtype = dt;
			dvalue = dv;
		}
		
		unsigned int full_price() {
			unsigned int price = cost * amount;
			switch (dtype) {
				case 1: 	return price * (1 - dvalue / 100.0);
				case 2: 
				case 3:		return price - dvalue;
				default:	return price;	
			}
		}
		
		static void write_title() {
			write_line();
			printf("|%-14s|%-30s|%-8s|%-4s|\n",
				"Цена x кол-во",
				"Скидка",
				"Всего",
				"День"
			);	
			write_line();
		}
		
		static void write_line() {
			for (int i = 0; i < 61; i++) printf("-");
			printf("\n");
		}
		
		static void write_text(char* text) {
			printf("|%59s|\n", text);
		}
		
		void write() {
			char temp[30];
			sprintf(temp, dictionary[dtype], dvalue);
			printf("|%8u x %3u|%-30s|%8u|%4u|\n", cost, amount, temp, full_price(), day);
		}
		
		unsigned short get_day() {
			return day;
		}
	
};
constexpr char Purchase::dictionary[][30];

class Container {
	private: 
		vector<Purchase> c;
		
	public:
		void add(Purchase& element) {
			c.push_back(element);
		}
		
		void sort_by_day() {
			sort(c.begin(), c.end(), [] (Purchase a, Purchase b) -> bool {
				return a.get_day() < b.get_day();
			});
		}
		
		void write_all() {
			Purchase::write_title();
			for (Purchase elem : c){
				elem.write();	
				Purchase::write_line();
			}
			if (c.size() == 0) {
				Purchase::write_text("Таблица пуста.");
			}
		}
		
		void write_on_10() {
			Purchase::write_title();
			int count = 0;
			for (Purchase elem : c) {
				if (elem.get_day() == 10) {
					count++;
					elem.write();
					Purchase::write_line();
				}
			}
			if (count == 0) {
				Purchase::write_text("В таблице нет товаров проданных 10го числа.");
				Purchase::write_line();
			}
		}
};

int main() {
	SetConsoleOutputCP(1251);
    SetConsoleCP(1251);
    Purchase p[] = {
		Purchase(10000, 6, 10, 0, 0),
		Purchase(17770, 1, 11, 1, 17),
		Purchase(66550, 2, 22, 2, 25000),
		Purchase(100000, 7, 10, 3, 500000),
		Purchase(12250, 25, 1, 1, 56),
		Purchase(1000000, 1, 2, 1, 17),
		Purchase(2000000, 6, 17, 2, 85000),
		Purchase(15900, 12, 3, 1, 99),
		Purchase(700000, 2, 31, 2, 22)
	};
	Container c;
	
	for (int i = 0; i < sizeof(p) / sizeof(p[0]); i++) {
		c.add(p[i]);
	}	
	printf("Все покупки:\n");
	c.write_all();
	printf("Сортировка:\n");
	c.sort_by_day();
	c.write_all();
	printf("Покупки за 10тое:\n");
	c.write_on_10();
	system("pause");
	return 0;
}