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#include <sys/types.h>
#include <sys/wait.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
int main(){
pid_t cpid,ppid;
char errbuf[1024];
cpid = fork();
if (cpid == -1) {
(void) snprintf(errbuf, sizeof(errbuf),
"fork: %s", strerror(errno));
printf("%s\n", errbuf);
exit(1);
}
if (cpid == 0) {
//child
ppid = getppid();
if(ppid == 1){
printf("parent died ?\n");
_exit(1);
}
printf("I'm child with %i, parent %i\n", getpid(), ppid);
_exit(0);
}
/* parent */
wait(NULL);
printf("Child id: %i\n", cpid);
return 0;
}
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