#include <signal.h>
#include <stdio.h>

void signal_catchfunc(int);

int main() {

	int ret;

	ret = signal(SIGINT, signal_catchfunc);

	if (ret == SIG_ERR) {
		printf("Error: unable to set signal handler.\n");
		exit(0);
	}

	printf("Going to raise a signal\n");
	ret = raise(SIGINT);
	if (ret != 0) {
		printf("Error: unable to raise SIGINT signal.\n");
		exit(0);
	}

	printf("Exiting...\n");
	return 0;
}

void signal_catchfunc(int signal) {

	printf("!! signal caught !!\n");

}