#include "stdafx.h"#include 
    
     #include 
     
       #pragma comment(lib, "ws2_32.lib")#pragma comment(lib, "urlmon.lib") #define MAX_SIZE 1024  int GetLocalIP();int GetInternetIP(); int main(int argc, char* argv[]){    GetLocalIP();    GetInternetIP();    return 0;}  int GetLocalIP(){    WSADATA wsaData;    int err = WSAStartup(MAKEWORD(2, 0), &wsaData);    if (err != 0)    {        return err;    }     char szHostName[MAX_PATH] = {0};    int nRetCode;    nRetCode = gethostname(szHostName, sizeof(szHostName));     char* lpLocalIP;    PHOSTENT hostinfo;     if (nRetCode != 0)    {        return WSAGetLastError();            }     hostinfo = gethostbyname(szHostName);    lpLocalIP = inet_ntoa(*(struct in_addr*)*hostinfo->h_addr_list);     if (szHostName != NULL)    {        printf("主机名: %s\n", szHostName);        printf("本地IP: %s\n", lpLocalIP);    }     WSACleanup();    return 0;} int GetInternetIP(){    char buf[MAX_PATH] = {0};    //把网页中读出的数据放在此处    char chTempIp[128] = {0};    char chIP[64] = {0};        //最终存放IP在此     //将网页数据写入c:\i.ini文件中    URLDownloadToFile(0, "http://iframe.ip138.com/ic.asp", "c:\\i.ini", 0, NULL);     FILE *fp = fopen("c:\\i.ini", "r");    if (fp != NULL)    {        //        fseek(fp, 0, SEEK_SET);        fread(buf, 1, MAX_PATH, fp);        fclose(fp);         //在buf中查找 [ 的位置, iIndex是buf中从[开始剩下的字符串，包括[这个字符串        char* iIndex = strstr(buf, "[");        if (iIndex)        {            sprintf(chTempIp, "%s", iIndex);            int nBuflen = strlen(chTempIp);             for (int i = 0; i < nBuflen; i++)            {                chIP[i] = chTempIp[i+1];                 //如果发现有 ] 则截断                if (chTempIp[i] == ']')                {                    chIP[i-1] = '\0';                    //printf("外网IP: %s\n", chIP);                }            }        }     }     printf("外网IP: %s\n", chIP);    remove("c:\\i.ini");     return 0; }