c++获取本机IP

//c++获取本机IP#include <stdio.h>#include <stdlib.h>#include <WINSOCK2.H>#pragma comment(lib,"ws2_32.lib")int getIP(int ,char**){char host_name[255];if(gethostname(host_name,sizeof(host_name))==SOCKET_ERROR){printf("Error %d when getting local host name\n",WSAGetLastError());return -1;}printf("host name:%s\n",host_name);struct hostent *phe=gethostbyname(host_name);if(phe==0){printf("Error host lookup\n");return -1;}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){system("pause");return -1;}int result=getIP(argc,argv);WSACleanup();system("pause");return result;}