/*
 * sigint-ignorer.c
 */

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

void handler(int signum);

int main(int argc, char *argv[])
{
    struct sigaction sa;

    /* set up the struct that defines what to do on receipt of a signal */
    memset(&sa, '\0', sizeof(sa));
    sa.sa_handler = handler;
    sigemptyset(&sa.sa_mask);
    sa.sa_flags = 0;

    /* associate that action with a particular signal */
    if(sigaction(SIGINT, &sa, NULL) < 0) {
        perror("sigaction");
        exit(1);
    }

    /* be helpful */
    printf("My pid is %d\n", getpid());

    /* infinite loop */
    while(1) {
        printf("I'm going to sleep now.\n");
        sleep(10);
    }
}

void handler(int signum)
{
    printf("You pressed Ctrl-C and I'm not going to terminate!\n");
    printf("<nelson>Ha ha</nelson>\n");
}