11【C语言 & 趣味算法】个人所得税问题（结构体应用）：结构体的声明、定义结构体类型的三种方法等

//趣味11：个人所得税问题  
#include <stdio.h>
#define TAXBASE  2000
/*定义结构体*/
typedef struct{ 
  long start; 
  long end; 
  double taxrate;
}TAXTABLE;
TAXTABLE TaxTable[]={{0,1500,0.03},{1500,4500,0.10},{4500,9000,0.20},{9000,35000,0.25},
  {35000,55000,0.30},{55000,80000,0.35},{80000,1e10,0.45}};
double CaculateTax(long profit)
{ 
  int i;  
  double tax=0.0; 
  profit-=TAXBASE;  
  for(i=0;i<sizeof(TaxTable)/sizeof(TAXTABLE); i++) 
  {   
    if(profit>TaxTable[i].start)    
    {     
      if(profit>TaxTable[i].end)      
      {       
        tax+=(TaxTable[i].end-TaxTable[i].start)*TaxTable[i].taxrate;
      }     
      else      
      {       
        tax+=(profit-TaxTable[i].start)*TaxTable[i].taxrate;
      }     
      profit-=TaxTable[i].end;      
    //  printf("start%d:%6ld end%d:%6ld  Tax:%12.2f Leave:%6ld\n",i,TaxTable[i].start,i,TaxTable[i].end,tax,(profit)>0 ? profit:0);
      printf("征税范围：%6ld~%6ld  该范围内缴税金额：%6.2f  超出该范围的金额：%6ld\n",
        TaxTable[i].start,TaxTable[i].end,tax,(profit)>0 ? profit:0);
    } 
} 
  return tax;
}
int main()
{ 
  long profit;  
  double tax; 
  printf("请输入个人收入金额:"); 
  scanf("%ld",&profit); 
  tax = CaculateTax(profit);  
  printf("您的个人所得税为: %12.2f\n",tax);
}