#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 = gethostbyname(argv[1]);
    if (host == NULL) {
	perror("host lookup");
	exit(1);
    } 

    int i=0;
    printf("%s IPs: ", host->h_name);

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