能够自动获取本机的ip地址代码

#include<stdio.h>  //头文件,大家都会吧
#include<winsock2.h>
#pragma comment(lib,"ws2_32.lib")
void CheckIP(void) 
{
WSADATA wsaData;
char name[155];
char *ip;
PHOSTENT hostinfo; 
if ( WSAStartup( MAKEWORD(2,0), &wsaData ) == 0 ) {  
if( gethostname ( name, sizeof(name)) == 0) { 
 if((hostinfo = gethostbyname(name)) != NULL) { //这些就是获得IP的函数
ip = inet_ntoa (*(struct in_addr *)*hostinfo->h_addr_list);

printf("%s\n",ip);
 } 
} 
WSACleanup( );
} }

int main(void)
{
CheckIP();
return 0;
}