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VC获取本机IP地址列表

#include <stdio.h>
#include <winsock2.h>
#pragma comment(lib,"ws2_32.lib")

int doit(int, char **)
{
 char host_name[255];
 //获取本地主机名称
 if (gethostname(host_name, sizeof(host_name)) == SOCKET_ERROR) {
  printf("Error %d when getting local host name. ", WSAGetLastError());
  return 1;
 }
 printf("Host name is: %s ", host_name);
 
 //从主机名数据库中得到对应的“主机”
 struct hostent *phe = gethostbyname(host_name);
 if (phe == 0) {
  printf("Yow! Bad host lookup.");
  return 1;
 }
 
 //循环得出本地机器所有IP地址
 for (int i = 0; phe->h_addr_list[i] != 0; ++i) {
  struct in_addr addr;
  memcpy(&addr, phe->h_addr_list[i], sizeof(struct in_addr));
  printf("Address %d : %s " , i, inet_ntoa(addr));
 }
 
 return 0;
}

int main(int argc, char *argv[])
{
 WSAData wsaData;
 if (WSAStartup(MAKEWORD(1, 1), &wsaData) != 0) {
  return 255;
 }
 
 int retval = doit(argc, argv);
 
 WSACleanup();
 
 return retval;
}

 

补充:软件开发 , Vc ,
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