#include <stdio.h>

int main ()
{
	char name[30];
	float tax, income, allowance, net_chargeable;
	int marital, children, parent;
	int more = 1;					// Boolean

	do{	

		printf("Name? ");
		scanf("%s" , name);
	
		do {
			printf("Total annual income? ");
			scanf("%f", &income);
		} while (income <0);

		do {
			printf("Marital status (1=Single, 2=Married)? ");
			scanf("%d", &marital);
		}while (marital != 1 && marital !=2);

		if (marital == 2)
			do {
				printf("Number of children? ");
				scanf("%d", &children);
			} while (children < 0);
			
		do{
			printf("Number of dependent parents? ");
			scanf("%d", &parent);
		}while (parent < 0);

		allowance = 30000;
		if (marital == 2)
		{
			allowance = allowance + 30000;
			if (children <= 5)
				allowance = allowance + children * 10000;
			else
				allowance = allowance + 50000;
		}

		allowance = allowance + parent * 15000;
	
		net_chargeable = income - allowance;

			if (net_chargeable <= 0)
			tax = 0;
		else if (net_chargeable <= 20000)
			tax = net_chargeable * 0.1;
		
		else if (net_chargeable <=40000)
			tax= net_chargeable *0.2;

		else 
		{
			tax= 20000 * 0.1 + 20000 * 0.2;
			tax= tax + (net_chargeable - 40000) * 0.3;
		}	 

		if ( tax > income * 0.25)
			tax = income * 0.25;
 
		printf("Tax for %s is $%.0f\n\n", name);

		do{
		
			printf("Any more (yes=1/no=0)? ");
			scanf("%d", &more);
		} while (more != 1 && more ==0);
	
		printf("\n");

	}while (more == 1);

	return 0;
}