/*
 * heron.c
 * 
 * Copyright 2014 Martin Putzlocher <mputzi@gmx.de>
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 * 
 * 
 */


#include <stdio.h>

int main(int argc, char **argv)
{
	printf("--- Quadratwurzelberechnung nach HERON ---\n");
	int r;
	double x;
	double y;	
	// Daten einlesen
	printf("Bitte Radikand angeben: ");
	scanf("%d", &r);
	printf("Bitte Startwert angeben: ");
	scanf("%lf", &x);
	// Los geht's...
	printf("> Berechne Quadratwurzel von %d \n", r);
	// Beschriftung
	printf("> Schritt | Wert \n");
	// Initialisierung Schleifenzaehler
	int i =0;
	// Beginn Schleife
	while((x-y)>=0.0){
		// Andere Kantenlaenge
		y = r / x;
		// Mittelwert bilden -> neues x
		x = (x+y)/2.0;
		// Ausgabe
		printf("> %d | %3.50lf \n",i,x);
		// Inkrement
		i += 1;
	}
	return 0;
}