C程序：获取本机IP地址_成都软件开发公司

C程序：获取本机IP地址

作者：zhaozj
发表时间：2020-12-23 11:03
来源：未知

// louis 2004-7-27

#include "stdafx.h"

int _tmain(int argc, _TCHAR* argv[]){ int ret; char buf[1024]; WORD wVersionRequested; WSADATA wsaData; int err;

struct hostent *host;

// socket initialize wVersionRequested = MAKEWORD( 2, 2 ); err = WSAStartup( wVersionRequested, &wsaData ); if ( err != 0 ) { return -1; }

memset(buf, 0, 1024);

// get hostname ret = gethostname(buf, 1024); if(ret != 0) { printf("return is %d/n", ret); ret = WSAGetLastError(); printf("specific error is %d/n", ret); printf("gethostname error./n"); }else printf("hostname is %s/n", buf);

// get host ip address host = gethostbyname(buf); if(host == NULL) { perror("gethostbyname"); return -1; }else //printf("ip address is %s/n", inet_ntoa(*(host->h_addr_list))); printf("ip address is %s/n", inet_ntoa(*(in_addr *)host->h_addr_list[0]));

return 0;}