C++ 基于libcurl的html 文件下载

lincurl的环境配置，在这里不做详细描述，代码实现程序如下：

#include <stdio.h>
#include <curl/curl.h>
/************************************************************************/
/*   created by: mengxiapoxin  date: 2014/12/9                          */
/************************************************************************/

int main(void)
{
	CURL *curl;
	CURLcode res;
	/*   调用curl_global_init()初始化libcurl  */
	res = curl_global_init(CURL_GLOBAL_ALL);
	if (CURLE_OK != res)
	{
		printf("init libcurl failed.");
		curl_global_cleanup();
		return -1;
	}

	/* 调用curl_easy_init()函数得到 easy interface型指针 */
	curl = curl_easy_init();
	if(curl) {
		/* 调用curl_easy_setopt()设置传输选项 */
		curl_easy_setopt(curl, CURLOPT_URL, "http://blog.csdn.net/mxxlevel");
		/* 调用curl_easy_perform()函数完成传输任务 */
		res = curl_easy_perform(curl);

		if(CURLE_OK == res) {
			char *ct;
			/* ask for the content-type */
			res = curl_easy_getinfo(curl, CURLINFO_CONTENT_TYPE, &ct);
			   
			if((CURLE_OK == res) && ct)
				printf("We received Content-Type: %s\n", ct);
			    
		}

		/* always cleanup */
		curl_easy_cleanup(curl);
	}
	return 0;
}

涉及到较多的参数类型回调，详细介绍点击这里http://curl.haxx.se/libcurl/c/curl_easy_setopt.html