code: correct exmaple work

main.cpp

@@ -21,14 +21,18 @@ Input input_data(istream &in, bool promt)
     size_t number_count, bin_count;
 
     if (promt)
+    {
         cerr << "Enter number count: ";
+    }
     in >> number_count;
 
     Input input;
 
     input.numbers.resize(number_count);
     if (promt)
+    {
         cerr << "Enter numbers: ";
+    }
 
     for (size_t i = 0; i < number_count; i++)
     {
@@ -36,11 +40,25 @@ Input input_data(istream &in, bool promt)
     }
 
     if (promt)
+    {
         cerr << "Count of baskets: ";
+    }
     in >> input.bin_count;
 
     return input;
 }
+size_t
+write_data(void *items, size_t item_size, size_t item_count, void *ctx)
+{
+    size_t data_size = item_count * item_size;
+
+    stringstream *buffer = reinterpret_cast<stringstream *>(ctx);
+    char *item = reinterpret_cast<char *>(items);
+    //(*buffer).write(item, data_size);
+    buffer->write(item, data_size);
+
+    return data_size;
+}
 
 Input download(const string &address)
 {
@@ -55,16 +73,14 @@ Input download(const string &address)
         {
             CURLcode res;
             curl_easy_setopt(curl, CURLOPT_URL, address.c_str());
+            curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
+            curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);
             res = curl_easy_perform(curl);
-            CURL *curl = curl_easy_init();
+
-            if (curl)
+            // res = curl_easy_perform(curl);
-            {
+
-                CURLcode res;
-                /* set options */
-                /* Perform the entire transfer */
-                res = curl_easy_perform(curl);
-                /* Check for errors */
             if (res != CURLE_OK)
+            {
                 fprintf(stderr, "curl_easy_perform() failed: %s\n",
                         curl_easy_strerror(res));
                 exit(1);
@@ -75,12 +91,17 @@ Input download(const string &address)
 
     return input_data(buffer, false);
 }
-int
+
-main(int argc, char* argv[]) {
+
+int main(int argc, char *argv[])
+{
     Input input;
-    if (argc > 1) {
+    if (argc > 1)
+    {
         input = download(argv[1]);
-    } else {
+    }
+    else
+    {
         input = input_data(cin, true);
     }