#include <iostream>
#include <fstream>
#include <sstream>


int main()
{
	std::fstream file_in;
	std::fstream file_out;
	file_in.open("kwadrat.txt", std::ios::in);
	file_out.open("kwadrat_wynik.txt", std::ios::out);
	if (!file_in.good())
	{
		std::cout << "Nie mozna otworzyc pliku wejsciowego";
		return 1;
	}
	std::string str;
	while (getline(file_in, str))
	{
		float a{}, b{}, c{};
		float delta{}, x1{}, x2{};
		std::stringstream ss(str);
		ss >> a >> b >> c;
		delta = pow(b, 2) - (4 * a * c);

		if (delta > 0)
		{
			x1 = (-b - sqrt(delta)) / 2 * a;
			x2 = (-b + sqrt(delta)) / 2 * a;
			std::cout << "Dla rownania o wspolczynikach A=" << a <<" B="<< b << " C=" << c << " wynik to: " << "X1: " << x1 << " X2: " << x2 << std::endl;;
			file_out << "Dla rownania o wspolczynikach A=" << a << " B=" << b << " C=" << c << " wynik to: " "X1: " << x1 << " X2: " << x2 << "\n";

		}
		else if (delta == 0)
		{
			x1 = (-b) / 2 * a;
			std::cout << "Dla rownania o wspolczynikach A=" << a << " B=" << b << " C=" << c << " wynik to: " << "X1: " << x1 << std::endl;
			file_out << "Dla rownania o wspolczynikach A=" << a << " B=" << b << " C=" << c << " wynik to: " << "X1: " << x1 << "\n";
		}
		else
		{
			std::cout << "Dla rownania o wspolczynikach A=" << a << " B=" << b << " C=" << c << "BRAK MIEJSCA ZEROWEGO" << std::endl;
			file_out << "Dla rownania o wspolczynikach A=" << a << " B=" << b << " C=" << c << "BRAK MIEJSCA ZEROWEGO\n";
		}
	}
	file_in.close();
	file_out.close();
	return 0;
}