function.#3

单片机与pc际之间的通信

get_str_length(unsigned char *str)
{
 int k;
 unsigned char ch;
 while(1)
  {
   ch=*(str + k);
   if(ch!='!') 
    {
     k++;
    }
   else 
    {
     return k;
	 break;
     
    }
  }

}