信号捕捉

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

void capture_sig(int code)
{
    printf("capture sig... ...\n");
}

int main()
{
    struct sigaction nact, oact;
    nact.sa_handler = capture_sig;
    nact.sa_flags = 0;
    sigemptyset(&nact.sa_mask);

    sigaction(SIGINT, &nact, &oact);

    while (1)
    {
        printf("running... ...\n");
        sleep(10);
    }

    return 0;
}