import java.util.Scanner;

public class Main{
    public static void main (String[] args) {
        Scanner scan = new Scanner(System.in);

        int factValue;
        int powerValue;
        float eps;
        boolean isNotCorrect;
        double currFunc, prevFunc;
        int numberOfIteration;
        int x;
        int multiplier;

        System.out.println("Данная программа бла бла бла");

        x = 0;
        do {
            isNotCorrect = false;
            System.out.println("Введите x");
            try {
                x = Integer.parseInt(scan.nextLine());
            } catch(NumberFormatException exception) {
                isNotCorrect = true;
                System.out.println("Ошибка ввода! Повторите попытку.");
            }
        } while(isNotCorrect); /* ввод x */

        eps = 0;
        do {
            isNotCorrect = false;
            System.out.println("Введите эпсилон");
            try {
                eps = Float.parseFloat(scan.nextLine());
            } catch(NumberFormatException exception) {
                isNotCorrect = true;
            }
            if ((isNotCorrect) || (eps > 1) || (eps < 0.00000001)) {
                isNotCorrect = true;
                System.out.println("Ошибка ввода! Повторите попытку.");
            }
        } while(isNotCorrect); /* ввод эпсилон */

        numberOfIteration = 0;
        currFunc = x;
        prevFunc = 0;
        multiplier = 1;

        System.out.print("sin(x) = ");
        System.out.println(String.format("%.10f", currFunc));

        while(Math.abs(currFunc - prevFunc) > eps ) {
            numberOfIteration++;
            prevFunc = currFunc;
            currFunc = 0;

            factValue = 1;
            for (int i = 1; i < 2 * numberOfIteration; i++) {
                factValue = factValue * i;
            }

            powerValue = x;
            for (int i = 1; i < (2 * numberOfIteration - 1); i++) {
                powerValue = powerValue * x;
            }

            if (numberOfIteration % 2 == 0) {
                multiplier = -1;
            }
            else {
                multiplier = 1;
            }

            currFunc = prevFunc + (multiplier * (powerValue / factValue));

            System.out.print("sin(x) = ");
            System.out.println(String.format("%.10f", currFunc));
        }
    }
}