1 #include "../common/InitSock.h"
 2 #include <stdio.h>
 3 CInitSock initSock;
 4 void main()
 5 {
 6     char szHost[256];
 7     ::gethostname(szHost,256);
 8     hostent *pHost = ::gethostbyname(szHost);
 9     in_addr addr;
10     for(int i =0;;i++)
11     {
12         char *p = pHost->h_addr_list[i];
13         if(p == NULL)
14             break;
15         memcpy(&addr.S_un.S_addr, p, pHost->h_length);
16         char *szIp = ::inet_ntoa(addr);
17         printf("本地IP地址：%s \n",szIp);
18     }
19 }

 1 #include  <winsock2.h> 
 2 #pragma comment(lib, "WS2_32 ")
 3 #pragma comment(lib, "ws2.lib ")    //   链接到WS2_32.lib 
 4 class   CInitSock    
 5 { 
 6     public: 
 7     CInitSock(BYTE   minorVer   =   2,   BYTE   majorVer   =   2) 
 8     { 
 9         //   初始化WS2_32.dll 
10         WSADATA   wsaData; 
11         WORD   sockVersion   =   MAKEWORD(minorVer,   majorVer); 
12         if(::WSAStartup(sockVersion,   &wsaData)   !=   0) 
13         { 
14             exit(0); 
15         } 
16     } 
17 
18     ~CInitSock() 
19     {    
20         ::WSACleanup();    
21     } 
22 };