ProgrammingThis forum is for all programming questions.
The question does not have to be directly related to Linux and any language is fair game.
Notices
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Get a virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! With over 10 pre-installed distros to choose from, the worry-free installation life is here! Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you want to use.
Exclusive for LQ members, get up to 45% off per month. Click here for more info.
Can you please tell me how to use kbhit function in gcc. I have searched in google and I hve found its code implementation in gcc as kbhit.h. Is there any need to compile kbhit.h or just add it into gcc's library??? If there is a need, how to compile it??? I have kbhit.h as
/* kbhit.h */
#include
int kbhit(void)
{
struct timeval tv;
fd_set read_fd;
you don't really need a header file in this simple example. It could be "dangerous" anyway to include a function definition (different from function prototype declaration) in a header file if this header file is included in several source files (*.c), because you could then possibly get error messages during linking.
To get this example compiled, create a file called kbhit.c (for gcc it's important to create a file with file extension *.c):
===== kbhit.c =====
#include <sys/select.h>
int kbhit(void)
{
struct timeval tv;
fd_set read_fd;
you don't really need a header file in this simple example. It could be "dangerous" anyway to include a function definition (different from function prototype declaration) in a header file if this header file is included in several source files (*.c), because you could then possibly get error messages during linking.
To get this example compiled, create a file called kbhit.c (for gcc it's important to create a file with file extension *.c):
===== kbhit.c =====
#include <sys/select.h>
int kbhit(void)
{
struct timeval tv;
fd_set read_fd;
LinuxQuestions.org is looking for people interested in writing
Editorials, Articles, Reviews, and more. If you'd like to contribute
content, let us know.