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我尝试下面的例子后卷曲复制文件:卷曲下载的文件总是空
CURL *curl;
FILE *fp;
CURLcode res;
char *url = "http://localhost/aaa.txt";
char outfilename[FILENAME_MAX] = "D:\\bbb.txt";
curl = curl_easy_init();
if(curl)
{
fp = fopen(outfilename,"wb");
curl_easy_setopt(curl, CURLOPT_URL, url);
curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
curl_easy_setopt(curl, CURLOPT_WRITEDATA, fp);
fclose(fp);
}
它创建了一个名为bbb.txt
文件,但该文件是空的。愿你能帮助我吗?我的错误是什么?