#include <stdio.h>
#include <sys/socket.h>
#include <netdb.h>
#include <arpa/inet.h>

int main(void) {
	unsigned long int i_IP;
	struct hostent *host_info;
	
	i_IP = inet_addr("127.0.0.1");
	host_info = gethostbyaddr((char *)&i_IP, sizeof(i_IP), AF_INET);
	if (host_info == NULL) perror("Failed!");
} // main()