c - How do I get rid of the expected 'int(*)(const struct dirent *)' but argument is of type 'int (*)(struct dirent *)' error? -

i don't understand why c compiler throwing dirent error. initialized everything, or @ least thought did, in according man page. , yet still getting thrown dirent error. keeps saying expected int (*)(const struct dirent *) argument of type 'int (*)(struct dirent *)'

my code:

extern int alphasort();  int count, i; struct direct **files;  if(!(getcwd(pathname, sizeof(pathname)))) {     die("error getting pathname\n"); } printf("current working directory = %s\n", pathname); count = scandir(pathname, &files, file_select, alphasort);  if (count < 0) {     die("no files in directory.\n"); } else {     printf("number of files = %d\n", count);     (i = 1; < count+1; i++)     {         printf("%s  ",files[i-1]->d_name);         printf("\n");     }      return 1; }  pathname = char pathname[maxpathlen]; 

file_select =

int file_select(struct direct *entry) {     if ((strcmp(entry->d_name, ".") == 0) || (strcmp(entry->d_name, "..") == 0))         return (false);      else          return (true); } 

you need change callback function argument matches expected:

int file_select(const struct direct *entry) {     .     .     . }