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

void handler(int sig) {
    write(1, "Caught SIGINT\n", 14); // Async-signal-safe output
    exit(1);
}

int main() {
    struct sigaction sa;
    sa.sa_handler = handler;
    sigemptyset(&sa.sa_mask);
    sa.sa_flags = 0;

    sigaction(SIGINT, &sa, NULL);

    while (1) {
        printf("Running...\n");
        sleep(1);
    }
}