unix 下的C开发手册,还用详细的例程。

																								beep																The Single UNIX ® Specification, Version 2				Copyright © 1997 The Open Group												 NAME				beep - audible signal				 SYNOPSIS												#include <curses.h>								int beep(void);												 DESCRIPTION				The				beep()				function alerts the user.  It sounds the audible alarm on the terminal,				or if that is not possible, it flashes the screen (visible bell).				If neither signal is possible, nothing happens.				 RETURN VALUE				The				beep()				function always returns OK.				 ERRORS				No errors are defined.				 APPLICATION USAGE				Nearly all terminals have an audible alarm, but only some can flash the				screen.				 SEE ALSO				flash(),				<curses.h>.												UNIX ® is a registered Trademark of The Open Group.				Copyright © 1997 The Open Group				 [ Main Index | XSH | XCU | XBD | XCURSES | XNS ]