main(int argc,char *argv[])
  {while(argc!=3)
    {printf("命令行命令不對,again!\n");
    exit(1);
    }
    bioscom(0,0x83,0);
    if(tolower(*argv[1])=='s')
      sendf(argv[2]);
        else if (tolower(*argv[1]=='r');
           receivef(argv[2]);
           
           
           
           
           }