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

		do{	
			printf("Number of dependent parents?");
			scanf("%d",&parent);
		}while(parent < 0);
	
		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=20000*0.1+(net_chargeable-20000)*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 $%f\n\n",name,tax);
	
		do{	
			printf("Any more (yes=1/no=0)?");
			scanf("%d",&more);
		} while(more !=0 && more !=1);

		printf("\n");

	}while (more == 1);
		
	return 0;
}