判断IP地址,MAC地址合法性-C语言

int isValidMac(char *value) 

{
  int r; //r=0:valid, else not valid
  char *reg="^[0-9A-F]\([0-9A-F]\:[0-9A-F]\)\{5\}[0-9A-F]$";
  r=ereg(reg,value);
  return r;
}{
  int r; //r=0