#include <stdio.h>
#include <unistd.h>
#include <signal.h>
void catch_int(int sig_num)
{
	// 重新設(shè)置 SIGINT 的 handler
	signal(SIGINT, catch_int);
	printf("Control-C is ignored, please don't waste time.\n");
	fflush(stdout);
}
int main(int argc, char* argv[])
{
	//設(shè)置Control-C的回調(diào)
	printf("Want to try Control-C ?\n");
	signal(SIGINT, catch_int);
	//進(jìn)入循環(huán)
	while(1) 
	pause();
}