第三次作业，做后一题（补交）

#include  
int main ( ) 
{ 
    float salary,tax=0,afterTaxIncome=0,i;  
    int t;
    printf("请输入您本月的收入总额（元）："); 
    scanf("%f", &salary);
    i=salary-3500;
  {
    if(i<=0)
        t=0;
    else if(i<=1500)
        t=1;
    else if(i>1500 && i<=4500)
        t=2;
    else if(i>4500 && i<=9000)
        t=3;
    else if(i>9000 && i<=35000)
        t=4;
    else if(i>35000 && i<=55000)
    	t=5;
   	else if(i>55000 && i<=80000)
   		t=6;
	else if(i<80000)
		t=7;
  }
  switch(t)
  {
            case 1:printf("tax=(s-3500)*0.03 TaxIncome=s-tax\n"); break;  
            case 2:printf("tax=(s-3500)*0.1 TaxIncome=s-tax\n");break;
            case 3: printf("tax=(s-3500)*0.2 TaxIncome=s-tax\n");break;
            case 4:printf("tax=(s-3500)*0.25 TaxIncome=s-tax\n"); break;
            case 5:printf("tax=(s-3500)*0.3 TaxIncome=s-tax\n");break;
            case 6: printf("tax=(s-3500)*0.35 TaxIncome=s-tax\n");break;
            default:printf("tax=(s-3500)*0.45 TaxIncome=s-tax\n");break;
  }
        afterTaxIncome=salary-tax;
    printf("您本月应缴个人所和税 %.2f 元，税后收入是 %.2f 元。\n", tax, afterTaxIncome); 
    return 0;
}