C++获取本机的ip地址程序

#include <WinSock2.h>
#pragma comment(lib,"ws2_32")        //链接到ws2_32动态链接库class CInitSock
{
public:CInitSock(BYTE minorVer = 2,BYTE majorVer = 2){WSADATA wsaData;WORD VersionRequset;VersionRequset = MAKEWORD(minorVer,majorVer);//装载winsock库if (WSAStartup(VersionRequset,&wsaData)!=0){//装载winsock库失败，推出exit(0);}}~CInitSock(){WSACleanup();}
};

上面是头文件

#include <iostream>
#include "a.h"
using namespace std;
CInitSock Initsock;
bool GetIp();
int main()
{GetIp();return 0;
}
bool GetIp()
{char szText[256];//获取本机主机名称int iRet;iRet = gethostname(szText,256);int a = WSAGetLastError();if (iRet!=0){printf("gethostname()  Failed!");return FALSE;}//通过主机名获取到地址信息HOSTENT *host = gethostbyname(szText);if (NULL==host){printf("gethostbyname() Failed!");return false;}in_addr PcAddr;for (int i=0;;i++){char *p = host->h_addr_list[i];if (NULL==p){break;}memcpy(&(PcAddr.S_un.S_addr),p,host->h_length);char*szIP = ::inet_ntoa(PcAddr);printf("本机的ip地址是：%s\n",szIP);}system("pause");
}

源代码文件