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

void catch_it(int s)
{
    // it is not safe to printf in a signal handler
    printf("caught signal %d\n", s);
}


int main(int argc, char** argv)
{
    int i = 0;

    signal(SIGINT, catch_it);

    while (1)
    {
        sleep(1);
        printf("Loop %d\n", ++i);
    }

    return 0;
}