Question

我已经尝试了所有明显的方法在文件的末尾，在CURLOPT_流的循环结束时写一个换行符。我没有收到错误，但也没有写过换行符。如何在CURLOPT_中插入换行符？

#include <iostream>
#include <stdio.h>
#include <curl/curl.h>


size_t write_data(void *ptr, size_t size, size_t nmemb, FILE *stream) {
        size_t written;
        written = fwrite(ptr, size, nmemb, stream);
        return written;
}



int main(void)
{
        CURL *curl;
        CURLcode res;

        curl = curl_easy_init();
        if(curl) {
        curl_easy_setopt(curl, CURLOPT_URL, "http://pubapi.cryptsy.com/api.php?method=singlemarketdata&marketid=155");

        /* Perform the request, res will get the return code */
        res = curl_easy_perform(curl);

        /* Check for errors */
        if(res != CURLE_OK)
                fprintf(stderr, "curl_easy_perform() failed: %s\n",
                        curl_easy_strerror(res));

        FILE * pFile;
        pFile = fopen ("/home/coinz/cryptsy/myfile.txt","a+");
        if (pFile!=NULL)
        {
                curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
                curl_easy_setopt(curl, CURLOPT_WRITEDATA, pFile);
                res = curl_easy_perform(curl);
                std::cout << pFile << std::endl;
                //pFile << "\n\r";
                fclose (pFile);
        }

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

Answer 1

尝试使用fprintf(pFile, "\n");代替<<运营商。

c ++如何在CURLOPT_中写入换行符

1 个答案: