下面例子将做些什么？ void send(int *to,

void send(int *to, int *from, int count)
//Duff设施，有帮助的注释被有意刪去了
{
  int n = (count+7)/8;
  switch (count%8) {
  case 0: do { *to++ = *from++;
  case 7:      *to++ = *from++;
  case 6:      *to++ = *from++;
  case 5:      *to++ = *from++;
  case 4:      *to++ = *from++;
  case 3:      *to++ = *from++;
  case 2:      *to++ = *from++;
  case 1:      *to++ = *from++;
           } while (--n>0);
  }
}