复习一下switch分支语句

解题思路:

注意事项:

参考代码:

#include<iostream>

int s(double );

int main(){

  using std::cout;

  using std::cin;

  double a;

  cin>>a;

  int n=s(a);

  switch(n){

  case 1:printf("%.2f",a*0.1);break;

  case 2:printf("%.2f",10000+(a-100000)*0.075);break;

  case 3:printf("%.2f",17500+(a-200000)*0.05);break;

  case 4:printf("%.2f",27500+(a-400000)*0.03);break;

  case 5:printf("%.2f",33500+(a-600000)*0.015);break;

  case 6:printf("%.2f",39500+(a-1000000)*0.01);break;

  default:cout<<"请输入大于零的数：";

  }

return 0;

}

int s(double t){

if(t<0) return 0;

else if(t<=100000.0) return 1;

else if(t<=200000.0) return 2;

else if(t<=400000.0) return 3;

else if(t<=600000.0) return 4;

else if(t<=1000000.0) return 5;

else return 6;

}