/*******************************************************************************作者						：邓中强Email						：1246747572@qq.comQQ  						：1246747572博客						：http://www.cnblogs.com/dzqdzq/时间						：2014/01/01功能*******************************************************************************/#include "cstdio"#include "cstring"#include "string"#include "winsock2.h"#pragma comment(lib, "urlmon.lib")using namespace std;// 获取本机ipchar* getlocal_ip(){	char *ret;	char host_name[256] = "";	WSADATA wsaData;	WSAStartup(0x101, &wsaData);	if (!gethostname(host_name, 256))	{		ret = inet_ntoa(*((struct in_addr*)gethostbyname(host_name)->h_addr));	}	WSACleanup();	return ret;}// 获取本机名char* getlocal_name(char *name,int len){	WSADATA wsaData;	WSAStartup(0x101, &wsaData);	gethostname(name, len);	WSACleanup();	return name;}// 获取公网ip (也叫外网ip)char* getPub_ip(char *ip){	const char* dest = "<code>";	const char* dest1 = "</code>";	const char* szFileName = "D:/ip.txt";	if (URLDownloadToFile(NULL, "http://www.ip.cn/", szFileName, 0, NULL) == S_OK)	{		FILE *fp = fopen(szFileName, "r");		if (fp)		{			char line[512];			while (fgets(line,512,fp))			{				char *fd = strstr(line, dest);				if (fd)				{					char* star = fd + strlen(dest);					strncpy(ip,star,strstr(star,dest1)-star);//16					break;				}			}			fclose(fp);			remove(szFileName);// 删除文件		}	}		return ip;}// 获取某个网站的ipchar* getipFromHttp(char *http,char *result){	const char* fileName = "D:/1.txt";	string cmd = string("ping ") + http + string(">") + fileName;	system(cmd.c_str());	FILE *fp = fopen(fileName,"r");	if (fp)	{		char line[512];		while (fgets(line,512,fp))		{			char *fd = strchr(line,‘[‘);			if (fd)			{				char *star = fd + 1;				strncpy(result, star, strchr(star,‘]‘)-star);				break;			}		}		fclose(fp);		remove(fileName);	}	return NULL;}int main(){	char name[28] = "";	printf("本地IP:%s\n", getlocal_ip());	printf("主机名：%s\n", getlocal_name(name, 28));	char ip[25] = "";	printf("外网：%s\n", getPub_ip(ip));	char *http = "www.taobao.com";	getipFromHttp(http, ip);	printf("%s --DNS--> %s\n",http,ip); 	system("pause");	return 0;}