41.c

计算概论阅读材料

/*41.c*/
#include <stdio.h>
void main(void)
{
	float pay,pay_tax,tax;
	scanf("%f",&pay);
	if(pay<=800)tax=0;
	else{
		pay_tax=pay-800;
		if(pay_tax<=500)
			tax=0.05*pay_tax;
		else if(pay_tax<=2000)
			tax=0.05*500+(pay_tax-500)*0.1;
		else if(pay_tax<=5000)
			tax=0.05*500+0.1*1500+0.15*(pay_tax-2000);
		else if(pay_tax<=20000)
			tax=0.05*500+0.1*1500+0.15*3000+0.2*(pay_tax-5000);
		else if(pay_tax<=40000)
			tax=0.05*500+0.1*1500+0.15*3000+0.2*15000+0.25*(pay_tax-20000);
		else if(pay_tax<=60000)
			tax=0.05*500+0.1*1500+0.15*3000
			+0.2*15000+0.25*20000+0.3*(pay_tax-40000);
		else if(pay_tax<=80000)
			tax=0.05*500+0.1*1500+0.15*3000+0.2*15000+0.25*20000
			+0.3*20000+0.35*(pay_tax-60000);
		else if(pay_tax<=100000)
			tax=0.05*500+0.1*1500+0.15*3000+0.2*15000+0.25*20000
			+0.3*20000+0.35*20000+0.4*(pay_tax-80000);
		else
			tax=0.05*500+0.1*1500+0.15*3000+0.2*15000+0.25*20000
			+0.3*20000+0.35*20000+0.4*20000+0.45*(pay_tax-100000);
	}
	printf("pay=%10.2f  tax=%10.2f\n",pay,tax);
}