#include <iostream>
#include <locale>
#include <cmath>
using namespace std;
unsigned long long factorial(int n) {
	return (n == 1 || n == 0) ? 1 : factorial(n - 1)*n;
}
int main()
{
	setlocale(LC_ALL, "Russian");
	double eps;
	cin >> eps;
	double x = (double)rand() / rand();
	cout << "x= " << x << endl;
	double acc = 1, cur;
	for (int i = 1; abs(acc - cur) - eps > 0; i++) {
		acc = cur;
		double my_sin = pow(-1, i - 1)*pow(x, 2 * i - 1) / factorial(2 * i - 1);
		cur = acc + my_sin;
	}
	cout << "Мой ответ: " << acc << endl;
	cout << "Стандартная функцция sin(x): " << sin(x) << endl;
	cout << "Разница: " << sin(x) - acc << endl;

	system("pause");
	return 0;
}