Check the given IP address is in IPv6 or v4 format (windows version)

ipaddrescheck.cpp

// Change the headefile for Windows
#include <memory>
#include <winsock2.h>
#include <ws2tcpip.h>
#pragma comment(lib,"Ws2_32.lib");
#include <string>
using namespace std;

// This is compatible with old version of Windows.
bool IsIPAddress(const string& value)
{
  addrinfo hint, *res = NULL;
	memset(&hint, '\0', sizeof(hint));
	hint.ai_family = PF_UNSPEC;
	hint.ai_flags = AI_NUMERICHOST;
	if (getaddrinfo(value.c_str(), NULL, &hint, &res))
		return false;

	int ai_family = res->ai_family;
	freeaddrinfo(res);

	return ((ai_family == AF_INET) || (ai_family == AF_INET6));
}