void *findfirst (FCB *fcb, void *data, const char *fn);

Find a directory entry matching a file name, perhaps with wild cards.

fcb =File Control Block to use for the search.
data =Pointer to 128 byte buffer to receive directory entry.
fn =File name to find, optionally containing wildcards.
Return:Pointer to directory entry in buffer, or NULL if not found.

Include file: diskio.h