This is for DOS only. It works for Windows, as well, but you probably want findfirstfile and findnextfile

include 


int findfirst(const char *pathname, struct ffblk *ffblk, int attrib);

values for attrib argument
FA_RDONLY	Include read-only files in the search (Ignored.)
FA_HIDDEN	Include hidden files in the search
FA_SYSTEM	Include system files in the search
FA_LABEL	Include the volume label in the search
FA_DIREC	Include subdirectories in the search
FA_ARCH	Include modified files in the search (Ignored.)