Ex6_07.cpp

// Osman Zakir
// 11 / 29 / 2021
// Beginning C++20: From Novice to Professional by Ivor Horton and Peter Van Weert
// Chapter 6 Example Code 7
// Using smart pointers

import <iostream>;
import <format>;
import <memory>;
import <vector>;
#include <cctype>

int main()
{
	std::vector<std::shared_ptr<std::vector<double>>> records;
	std::size_t day{ 1 };

	while (true)
	{
		auto day_records{ std::make_shared<std::vector<double>>() };
		records.push_back(day_records);

		std::cout << "Enter temperators for day " << day++
			      << " separated by spaces. Enter 1000 to end:\n";

		while (true)
		{
			double t{};
			std::cin >> t;
			if (t == 1000.0)
			{
				break;
			}
			day_records->push_back(t);
		}
		std::cin.ignore(32767, '\n');

		std::cout << "Enter another day's temperatures (Y or N)? ";
		char answer;
		std::cin >> answer;
		if (std::toupper(answer) != 'Y')
		{
			break;
		}
	}
	std::cin.ignore(32767, '\n');

	day = 1;
	for (auto record : records)
	{
		double total{};
		std::size_t count{};

		std::cout << std::format("\nTemperatures for day {}:\n", day++);
		for (auto temp : *record)
		{
			total += temp;
			std::cout << std::format("{:6.2f}", temp);
			if (++count % 5 == 0)
			{
				std::cout << std::endl;
			}
			std::cout << std::format("\nAverage temperature: {:.2f}", total / count);
		}
	}
}