if (setlocale (LC_ALL, "de_DE.utf8") == NULL)
if (setlocale (LC_ALL, "de_DE.UTF-8") == NULL)
main (void){  if (setlocale (LC_ALL, "de_DE.utf8") == NULL)    {      puts ("cannot set locale");      exit (1);    }  wchar_t s[7];  int n = sscanf (string, "%l[\x80\xc2]", s);  if (n != 1)    {      printf ("return values %d != 1\n", n);      exit (1);    }  return 0;}