C++ 下载文件 HTTP

参考：http://stackoverflow.com/questions/5184988/should-i-use-urldownloadtofile

#include "stdafx.h"#include <stdio.h>#include <tchar.h>#include <windows.h>#include <Urlmon.h>#pragma comment(lib,"Urlmon.lib") //加入链接库int _tmain(int argc, _TCHAR* argv[]){TCHAR url[] = TEXT("http://a.hiphotos.baidu.com/image/pic/item/1b4c510fd9f9d72a9090781dd62a2834349bbb3e.jpg");printf("Url: %S\n", url);TCHAR path[MAX_PATH];GetCurrentDirectory(MAX_PATH, path);wsprintf(path, TEXT("%s\\index.jpg"), path);printf("Path: %S\n", path);HRESULT res = URLDownloadToFile(NULL, url, path, 0, NULL);if (res == S_OK) {printf("Ok\n");}else if (res == E_OUTOFMEMORY) {printf("Buffer length invalid, or insufficient memory\n");}else if (res == INET_E_DOWNLOAD_FAILURE) {printf("URL is invalid\n");}else {printf("Other error: %d\n", res);}return 0;}