这个程序有什么错误？？
为什么incoming好像被赋值了8300?
#include"math.h"
#include"stdio.h"
main()
{  int profile,incoming,real;
   scanf("The incoming is %d .\n",incoming);
   real=incoming*0.1;
   printf("%d",real);
   switch(real)
        {
   case  10 :  profile=10*0.1+10*0.1+20*0.075+20*0.03+40*0.015+(incoming-100)*0.01; break;
   case   9 :
   case   8 :
   case   7 :
   case   6 :  profile=10*0.1+10*0.1+20*0.075+20*0.03+(incoming-60)*0.015;  break;
   case   5 :
   case   4 :  profile=10*0.1+10*0.1+20*0.075+(incoming-40)*0.03;   break;
   case   3 :
   case   2 :  profile=10*0.1+10*0.1+(incoming-20)*0.075;  break;
   case   1 :  profile=10*0.1+(incoming-10)*0.1;  break;
   case   0 :  profile=incoming*0.1;  break;
        }
   printf("The profile is %d.\n",profile);
}


谢过！！