You can adjust your function pointer typedefs if you like. e.g. signal(2) http://man7.org/linux/man-pages/man2/signal.2.html http://man7.org/linux/man-pages/man

You can adjust your function pointer typedefs if you like. e.g. signal(2) http://man7.org/linux/man-pages/man2/signal.2.html http://man7.org/linux/man-pages/man2/signal.2.html typedef void (*sighandler_t)(int); sighandler_t signal(int signum, sighandler_t handler); can be rewritten as typedef void sighandler_t(int); sighandler_t *signal(int signum, sighandler_t *handler);