1 #include <stdio.h>
2 #include <WinSock2.h>
3 #pragma comment(lib, "ws2_32.lib")
4
5 int main(int argc, char **argv)
6 {
7 WSADATA wsaData;
8 WORD wVersion = MAKEWORD(2, 2);
9 if(::WSAStartup(wVersion, &wsaData) != 0) //初始化套接字库
10 {
11 printf("Initialize the socket failed\n");
12 return 0;
13 }
14
15 char szHostName[256];
16 ::gethostname(szHostName, sizeof(szHostName)); //获取主机名
17 printf("主机名：%s\n", szHostName);
18
19 hostent *pHost = ::gethostbyname(szHostName); //通过主机名获取IP
20
21 //打印出所有的IP地址
22 in_addr addr;
23 for(int i = 0; ; i++)
24 {
25 char *p = pHost->h_addr_list[i];
26 if(p == NULL)
27 break;
28
29 memcpy(&addr.S_un.S_addr, p, pHost->h_length);
30 char *szIp = ::inet_ntoa(addr);
31
32 printf("本机IP地址：%s\n", szIp);
33 }
34
35 return 0;
36 }
