C++ 获得本机IP

#include "stdafx.h"
#include <winsock2.h>
#include <stdio.h>
#include <windows.h>
#include <iostream>
 
#pragma comment(lib,"ws2_32.lib")

char buf[256]="";
 
  struct hostent *ph = 0;
 
  WSADATA w;
 
  WSAStartup(0x0101, &w);//这一行必须在使用任何SOCKET函数前写！
 
  gethostname(buf, 256);
 
    std::string hostNmae = buf;//此处获得本机名称
 
  ph = gethostbyname(buf);
 
  const char *IP =inet_ntoa(*((struct in_addr *)ph->h_addr_list[0]));//此处获得本机IP
 
  WSACleanup();
 
  printf("%s",IP);