#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <arpa/inet.h>

int main(int argc, char **argv) {

	if (argc < 2) {
		fprintf(stderr, "Usage: %s hostname\n", argv[0]);
		exit(1);
	}

	struct hostent *host = malloc(sizeof(struct hostent));
	char buffer[1024];
	int error;

	while(1) {
		if (gethostbyname_r(argv[1],host,buffer,sizeof(buffer),&error) != NULL) {
			int i=0;
			printf("%s IPs: \n", host->h_name);

			while (host->h_addr_list[i] != NULL) {
				printf("%s \n", inet_ntoa(*(struct in_addr*)(host->h_addr_list[i])));
				i++;
			}
		} else {
			printf("gethostbyname_r returned null\n");
		}
	}
}