1.输入收入金额；
2.分段计算；
3.输出金额
#include<iostream>
using namespace std;
double f(double t)
{
double sum=0;
if(t>3500&&t<=4500){sum=1455+(t-1500)*0.9;}
if(t>4500&&t<=9000){sum=4155+(t-4500)*0.8;}
if(t>9000&&t<=35000){sum=7755+(t-9000)*0.75;}
if(t>35000&&t<=55000){sum=27255+(t-35000)*0.7;}
if(t>55000&&t<=80000){sum=41255+(t-55000)*0.65;}
if(t>80000){sum=57505+(t-80000)*0.55;}
return sum;
}
int main(){
double start,End=0;
printf("请输入收入金额：");
cin>>start;
End=f(start);
printf("税后收入为%.2f元",End);
return 0;
}
