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#include <winsock2.h>
#include <stdio.h>
#pragma comment(lib,"ws2_32.lib")
void main()
{
WSADATA wsadata;
WORD dwVersionRequested;
int err;
dwVersionRequested=MAKEWORD(1,1);
err=WSAStartup(dwVersionRequested,&wsadata);

unsigned int addr;
char *myIp= "192.168.1.100"; //²»ÊDZ¾»úIP
addr = inet_addr(myIp);
struct hostent *pHost1 = gethostbyaddr((char *)&addr,4,PF_INET);

printf("%s\n",pHost1->h_name);//¼ÆËã»úÃû×Ö

WSACleanup();
}


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  struct hostent *hp; 
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