//
//  main.c
//  lab2_8
//
//  Created by Денис Домашевич on 23.02.2018.
//  Copyright © 2018 Денис Домашевич. All rights reserved.
//

#include <math.h>
#include <stdio.h>
#include <stdbool.h>

//Проверка на ввод числа тип LongLong
long long readLongLong() {
    long long res;
    while(true) {
        if(scanf("%lld", &res) && getchar() == '\n') {
            return res;
        } else {
            printf("Try again\n");
            while(getchar() != '\n') {}
        }
    }
}

//Проверка на ввод числа типа Double
double readDouble() {
    double res;
    while(true) {
        if(scanf("%lf", &res) && getchar() == '\n') {
            return res;
        } else {
            printf("Try again\n");
            while(getchar() != '\n') {}
        }
    }
}

int main() {

    printf("Enter x = \n");
    long long x = readLongLong(), iter = 0;
    printf("Enter eps = \n");
    double eps = readDouble(), currY = (double)x;

    while(true) {
        iter++; // Подсчёт количества итераций
        double newY = (currY + (x / currY)) / 2;
        if(eps + newY >= currY) {
            break;
        }
        currY = newY;
    }

    printf("Result of my function %lf\n", currY);
    printf("Number of iterations %lld\n", iter);
    printf("Result of standart function %lf\n", sqrt((double)x));

    return 0;
}