プロセスグループをkill killpg

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

int main()
{
int pgrp;
int sig = SIGKILL;
int status;

printf("PPID = ");scanf("%d", &pgrp);

status = killpg(pgrp, sig);
if(status) {
printf("Error status=%d errno=%d\n", status, errno);
exit(1);
}

return 0;
}