FILE * fopen ( const char *filename, const char *mode ); FILE * fdopen ( int filedes, const char *type ); int fputc ( int c, FILE *stream ); int fgetc ( FILE *stream ); int fputs ( int c, FILE *stream ); char * fgets ( char *s, int size, FILE *stream ); int fprintf ( FILE* stream, const char *format, ... ); int sprintf ( char *str, const char *format, ... ); int fscanf ( FILE *stream, const char *format, ... ); int sscanf ( const char *str, const char *format, ... ); void rewind ( FILE *stream ); int fseek ( FILE *stream, long offset, int whence ); int lseek ( in filedes, long offset, int whence ); long ftell ( FILE *stream ); int fgetpos ( FILE *stream, fpos_t *pos ); int fsetpos ( FILE *stream, fops_t *pos ); int fclose ( FILE *stream ); int open ( const char *pathname, int flags ); int open ( const char *pathname, int flags, mode_t mode ); ssize_t read ( int fd, void *buf, size_t count ); ssize_t write ( int fd, const void *buf, size_t count ); ssize_t pread ( int filedes, void *buf, size_t count, off_t offset ); ssize_t pwrite ( int filedes, const void *buf, size_t count, off_t offset );