#include <sys/types.h>
#include <sys/wait.h>
#include <unistd.h>
#include <stdio.h>

int main() {
	pid_t pid = getpid();
	pid_t fpid = fork();
	printf("own: %d\nfork: %d\n", pid, fpid);
	if (fpid == 0) {
		printf("parent: %d\n", getppid());
	}
	else if (fpid > 0) {
		int childStatus;
		wait(&childStatus);
		printf("child exit status: %d\n", childStatus);
	}
}