#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <string.h>

volatile sig_atomic_t sigint_count = 3;

int main(void)
{
        struct sigaction sa_ignore;

        memset(&sa_ignore, 0, sizeof(sa_ignore));
        sa_ignore.sa_handler = SIG_IGN;

        if (sigaction(SIGINT, &sa_ignore, NULL) < 0) {
                perror("sigaction");
                exit(1);
        }

        while (1) {
                printf("main: sigint_count(%d), calling pause ...\n",
                       sigint_count);

                pause();

                printf("main: returned from pause. sigint_count(%d)\n",
                       sigint_count);
        }

        return 0;
}