Regarde dans l'aide de ton compilateur c'est indiqué.
DOS file attributes
Constant ¦ Description
-----------Ï---------------------
FA_RDONLY ¦ Read-only attribute
FA_HIDDEN ¦ Hidden file
FA_SYSTEM ¦ System file
FA_LABEL ¦ Volume label
FA_DIREC ¦ Directory
FA_ARCH ¦ Archive
void findfirst(const char *pathname, struct ffblk *ffblk, int ------> attribut FA_DIREC ici <-----);
void findnext(struct ffblk *ffblk);