open

   Opens a file for reading, writing, or editing. It positions the
   file at its beginning (byte 0).

   Format

     #include  <fcntl.h>

     int open  (const char *file_spec, int flags, mode_t mode);        
               (ANSI C)

     int open  (const char *file_spec, int flags, . . . ); 
               (DEC C Extension)
 

Additional information available:

Arguments       Description     Return_Values   Example