INTRO(3)						   BSD Library Functions Manual 						  INTRO(3)

NAME

     intro -- introduction to the C libraries

DESCRIPTION

     This section provides an overview of the C library functions, their error returns and other common definitions and concepts.  Most of these
     functions are available from the System library, libSystem.  Other libraries must be indicated at compile time with the -l option of the com-
     piler.

     The various libraries (followed by the loader flag):

     libSystem (-lSystem)  Standard C library functions.  When using the C compiler cc(1), it is not necessary to supply the loader flag -lSystem
			   for these functions.  There are several `libraries' or groups of functions included inside of libSystem: the standard
			   I/O routines, database routines, bit operators, string operators, character tests and character operators, des encryp-
			   tion routines, storage allocation, time functions, signal handling and more.

			   For compatibility with other systems, which provide these capabilities in separate libraries (such as libc), symbolic
			   links are provided for -lc, -ldbm, -ldl, -linfo, -lm, -lpoll, -lpthread and -lrpcsvc; they all point to libSystem.

     libcurses (-lcurses -ltermcap)
			   Terminal independent screen management routines for two dimensional non-bitmap display terminals.  (See ncurses(3).)

     libl (-ll) 	   The library for lex(1).

     libtermcap (-ltermcap)
			   The terminal independent operation library package.	(See termcap(3).)

     liby (-ly) 	   The library for yacc(1).

FILES

     /usr/lib/libSystem.dylib	       the main System library
     /usr/lib/libSystem_debug.dylib    the main System library compiled with debug support
     /usr/lib/libSystem_profile.dylib  the main System library compiled for profiling

SEE ALSO

     cc(1), ld(1), nm(1), intro(2), stdio(3)

HISTORY

     An intro manual appeared in Version 7 AT&T UNIX.

BSD
								   Aug 17, 2006 							       BSD