请大家解答一下，评论区留下你的答案

#include <stdio.h>
int main()
{
  int i;
  double  bonus,bon1,bon2,bon4,bon6,bon10;
  int  branch;
  bon1=100000*0.1;
  bon2=bon1+100000*0.075;
  bon4=bon2+200000*0.05;
  bon6=bon4+200000*0.03;
  bon10=bon6+400000*0.015;
  
  printf("PA=");
  scanf("%d",&i);
  branch=i/100000;
  if (branch>10)  branch=10;
  switch(branch)
  {  case 0:bonus=i*0.1;break;
     case 1:bonus=bon1+(i-100000)*0.075;break;
     case 2:
     case 3: bonus=bon2+(i-200000)*0.05;break;
     case 4:
     case 5: bonus=bon4+(i-400000)*0.03;break;
     case 6:
     case 7:
     case 8:
     case 9: bonus=bon6+(i-600000)*0.015;break;
     case 10: bonus=bon10+(i-1000000)*0.01;
  }
   printf("Abonus is:%10.2f\n",bonus);
   return 0;
 }