getip.cpp

程序获取并输出本地主机的所有适配器的IP地址

#include "winsock2.h"
#include "iostream"
using namespace std;

#pragma comment(lib,"ws2_32")

int main(int argc,char *argv[])
{
	WSADATA wsaData;
	if (WSAStartup(MAKEWORD(2,1),&wsaData) != 0)
	{
		cout<<"Init winsock failed!"<<endl;
	}


	for(int j=1;j<argc;j++)
	{
      hostent *p=gethostbyname(argv[j]);

		  char *pIP;
	  in_addr in;
	  for(int i = 0;;i++)
	  {
		  pIP = p->h_addr_list[i];
		  if (pIP == 0)break;
		  memcpy(&in.S_un.S_addr,pIP,p->h_length);
		  cout<<"IP"<<i<<":"<<inet_ntoa(in)<<endl;
		  
	}
    }


	
	
	
	
	WSACleanup();
	return 0;
}