find the ip address

/*
Getip: This program takes a hostname as argument and outputs its ip address
Usage: ./getip <hostname>
  Program Name: getip.c
    Author Deepak Kumar
    Email: deepakkumarnd@gmail.com
*/


#include<stdio.h>
#include<stdlib.h>
#include<netdb.h>
#include<errno.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<netinet/in.h>
#include<arpa/inet.h>

struct in_addr getip(char *);      //returns 32 bit ip address

int main(int argc, char *argv[]) {
  if(argc! = 2) {
      printf("Usage! ./getip <hostname>\n");
      exit(-1);
    }
  getip(argv[1]);
  return(0);
}

// function reurning address
struct in_addr getip(char *domain) {
  struct hostent *host = NULL;
  
  if(!(host = gethostbyname(domain))) {
      herror("Error! ");
      exit(-2);
  }

  if(host -> h_name! = NULL){
      printf("Hostname:\t%s", host -> h_name);
  }

  printf("Aliases:\n");
  
  int i = 0;
  while(1) {
      if(!(host -> h_aliases[i])) { break; }
      printf("\t%d)\t%s\n", (i+1), host -> h_aliases[i]);
      i++;
  }

  printf("Address type\t%d\n", host -> h_addrtype);
  printf("Address length\t%d\n", host -> h_length);
  printf("Network addresses:\n");
  
  i = 0;
  while(1){
    if(!(host -> h_addr_list[i])) { break; }
    printf("\t%d)\t%s\n", (i+1), inet_ntoa(*((struct in_addr *)host -> h_addr_list[i])));
    i++;
  }

  return (*((struct in_addr*)host -> h_addr));
}