Save file with name as current timedate - c++

Question

This is some code I have found from various tutorials online:
#define CURL_STATICLIB
#include <stdio.h>
#include <curl/curl.h>
#include <curl/types.h>
#include <curl/easy.h>
#include <string>
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;
FILE *fp;
CURLcode res;
char *url = "http://localhost/aaa.txt";
char outfilename[FILENAME_MAX] = "C:\\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);
res = curl_easy_perform(curl);
curl_easy_cleanup(curl);
fclose(fp);
}
return 0;
}
Can anyone give me some guidance on how I would save this file in a timedate format like this:
yyyymmddhhmmss
I believe the answer is based on this bit of code but I'm not sure how to implement it:
time_t rawTime

Answer 1

I suggest use C++ streams for files. So example can look like this:
std::time_t t = std::time(nullptr);
std::tm tm = *std::localtime(&t);
std::stringstream filename_stream;
filename_stream << std::put_time(&tm, "%Y%m%d%H%M%S");
std::string file_name;
filename_stream >> file_name;
std::ofstream file(file_name);
file << "File content" << std::endl;