code: конечный вариант

main.cpp

@@ -1,3 +1,5 @@
+#include <sstream>
+#include <string>
 #include <curl/curl.h>
 #include <iostream>
 #include <vector>
@@ -5,21 +7,25 @@
 #include "text.h"
 #include "svg.h"
 using namespace std;
-struct Input {
+struct Input
+{
     vector<double> numbers;
     size_t bin_count{};
     size_t number_count{};
     size_t max_count{};
 };
 Input
-input_data(istream& cin, bool prompt) {
-    if (prompt==true){
+input_data(istream& cin, bool prompt)
+{
+    if (prompt==true)
+    {
         Input in;
         cerr << "Enter number count: ";
         cin >> in.number_count;
         vector<double> numbers(in.number_count);
         in.numbers.resize(in.number_count);
-    for (size_t i = 0; i < in.number_count; i++) {
+        for (size_t i = 0; i < in.number_count; i++)
+        {
             cin >> in.numbers[i];
         }
         size_t bin_count;
@@ -30,12 +36,14 @@ input_data(istream& cin, bool prompt) {
         in.max_count = 0;
         return in;
     }
-    if (prompt==false){
+    if (prompt==false)
+    {
         Input in;
         cin >> in.number_count;
         vector<double> numbers(in.number_count);
         in.numbers.resize(in.number_count);
-    for (size_t i = 0; i < in.number_count; i++) {
+        for (size_t i = 0; i < in.number_count; i++)
+        {
             cin >> in.numbers[i];
         }
         size_t bin_count;
@@ -46,29 +54,58 @@ input_data(istream& cin, bool prompt) {
         return in;
     }
 }
-int main(int argc, char* argv[])
+size_t
+write_data(void* items, size_t item_size, size_t item_count, void* ctx) {
+    size_t data_size = item_size * item_count;
+    stringstream* buffer = reinterpret_cast<stringstream*>(ctx);
+    buffer->write(reinterpret_cast<const char*>(items), data_size);
+    return data_size;
+}
+Input
+download(const string& address)
 {
-
-    if (argc>1){
+    stringstream buffer;
     CURL* curl = curl_easy_init();
-        if(curl) {
+    if(curl)
+    {
         CURLcode res;
         const char* res2;
-            curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
+        double connect;
+        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);
-            if (res!=0){
+        if (res!=0)
+        {
             res2=curl_easy_strerror(res);
             cout<<res2<<endl;
             exit(1);
         }
-            curl_easy_cleanup(curl);
+
+        if(CURLE_OK == res) {
+      res = curl_easy_getinfo(curl, CURLINFO_CONNECT_TIME, &connect);
+      if(CURLE_OK == res) {
+        cerr<<("Time: %.1f", connect)<<endl;
       }
-        return 0;
     }
+        curl_easy_cleanup(curl);
+    }
+    curl_global_init(CURL_GLOBAL_ALL);
+    return input_data(buffer, false);
+}
 
+int main(int argc, char* argv[])
+{
+    Input in;
+    if (argc > 1)
+    {
+        in = download(argv[1]);
+    }
+    else
+    {
+        in = input_data(cin, true);
+    }
 
-    curl_global_init(CURL_GLOBAL_ALL);
-    auto in = input_data(cin, true);
     auto bins = make_histogram(in.numbers, in.bin_count, in.number_count, in.max_count);
     show_histogram_svg(bins, in.max_count, in.bin_count);
     return 0;