获取本机ip.txt

一些可以实现益出的程序

#include <winsock2.h>  
#include <stdio.h>  

#pragma comment( lib, "WS2_32.lib" )   //很多人就是因为这个编译不成功 :)  

int main()  
{  
   char host_name[256];  
   int WSA_return;  
   WSADATA WSAData;  
   HOSTENT *host_entry;  
   WORD  wVersionRequested;  

   wVersionRequested = MAKEWORD( 2, 0 );   
   WSA_return=WSAStartup(wVersionRequested,&WSAData); //进行WSAStartup函数调用  

   if(WSA_return==0)  
   {  
       gethostname(host_name,sizeof(host_name));  //获取本地主机名称  
       host_entry=gethostbyname(host_name);   //从主机名数据库中得到对应的“主机”  

          for( int i = 0; host_entry!= NULL && host_entry->h_addr_list[i]!= NULL; i++ )  
                //循环得出本地机器所有IP地址  
          {  
                const char *pszAddr=inet_ntoa (*(struct in_addr *)host_entry->h_addr_list[i]);  
          MessageBox(NULL,pszAddr,host_name,MB_OK);  
          }  

   }  
   else  
   {  
          //错误提示  
       printf("ERROR\n");  
   }  

WSACleanup();  
return 0;  
}