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./n", WSAGetLastError());   return 1;  }  printf("Host name is: %s/n", 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/n" , 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; }