gethostbyname通过域名获得IP地址

#include <winsock.h>
#pragma comment(lib, "ws2_32.lib") 

WSADATA wsaData;
 WSAStartup(MAKEWORD(2, 2), &wsaData);   

 struct hostent * host= gethostbyname("www.csdn.net");
 char* pszIP= (char*)inet_ntoa(*(struct in_addr*)(host->h_addr));