/* steuern.c
 *
 * Copyright (C) 2008 Mihael Pranjic <tux@openxinu.linuxlovers.at>
 *
 * 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; version 2 only.
 *
 * 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 Lesser General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

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

#define FALSE 0
#define TRUE 1


float calculate(float lohn, int isyoualleinverdiener)
	{
		float erstens,zweitens,drittens,absetzbetraege;
		int werbepauschale, sonderpauschale;
		werbepauschale = 132;
		sonderpauschale = 60;
		lohn = lohn * 12; /* How much do we earn a year? */

		lohn = lohn - (werbepauschale + sonderpauschale);

		/* The following part is dependent on how much you earn */
		if(((lohn - 10000) * 0.3833 )> 0)
			erstens = (lohn - 10000)* 0.3833;
		else
			erstens = 0;


		if(((lohn - 25000) * 0.436 )> 0)
			zweitens = (lohn - 25000)* 0.436;
		else
			zweitens = 0;


		if(((lohn - 51000) * 0.5 )> 0)
			drittens = (lohn - 51000)* 0.5;
		else
			drittens = 0;
		/* ........................................................... */
		absetzbetraege = absetzen(isyoualleinverdiener);
		lohn = lohn - ((erstens + zweitens + drittens) - absetzbetraege);
		return lohn;
	}

int absetzen(int isyoualleinverdiener)
	{
		float absetzbetraege;
		absetzbetraege = 54 + 291;
		if(isyoualleinverdiener)
			absetzbetraege += 364;

		return absetzbetraege;
	}

int main(void)
	{
		float lohn,ausgabe;
		char buf[11];
		char alleinverdiener[] = " ";
		int isyoualleinverdiener;
		/* get our needed information :) */
		printf("Bitte geben sie hier ihren *monatlichen* Lohn ein: ");
		fgets(buf, 11, stdin);
		sscanf(buf, "%f", &lohn);

		printf("Sind sie Alleinverdiener bzw. Alleinerzieher? [Ja/Nein]: ");
		fgets(buf, 5, stdin);
		sscanf(buf, "%s", &alleinverdiener);
		printf("%s", alleinverdiener);

		if(alleinverdiener[0]= *"Ja")
			isyoualleinverdiener = TRUE;

		if(alleinverdiener[0]= *"Nein")
			isyoualleinverdiener = FALSE;
		printf("%i", isyoualleinverdiener);


		ausgabe = calculate(lohn, isyoualleinverdiener);

		printf("Lohn:  %f  \n", ausgabe);
		return 0;
	}