сделал до индивидуального задания

project/main.cpp

@@ -5,6 +5,8 @@
 #include "text.h"
 #include "svg.h"
 #include "emptiness.h"
+#include <sstream>
+#include <string>
 using namespace std;
 struct Input
 {
@@ -30,31 +32,52 @@ input_data(istream& tin, bool prompt)
     tin >> in.bin_count;
     return in;
 }
-int main(int argc, char* argv[])
+
+size_t write_data(void* items, size_t item_size, size_t item_count, void* ctx)
 {
-    if(argc > 1)
+    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)
+{
+    stringstream buffer;
     CURL *curl = curl_easy_init();
     if(curl)
     {
         CURLcode res;
-            curl_easy_setopt(curl, CURLOPT_URL, argv[1]);
+        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_easy_cleanup(curl);
+        if (res != CURLE_OK)
-            if(res != CURLE_OK)
         {
-                fprintf(stderr, "curl_easy_perform() failed: %s\n",
+            fprintf(stderr, "curl_easy_perform() failed: %s\n",curl_easy_strerror(res));
-                        curl_easy_strerror(res));
             exit(1);
         }
-            cerr << res;
+        curl_easy_cleanup(curl);
+
     }
-        return 0;
+    return input_data(buffer, false);
+}
+
+int
+main(int argc, char* argv[])
+{
+    Input input;
+    if (argc > 1)
+    {
+        input = download(argv[1]);
     }
-    curl_global_init(CURL_GLOBAL_ALL);
+    else
-    Input in = input_data(cin,true);
+    {
-    auto bins = make_histogram(in.numbers, in.bin_count);
+        input = input_data(cin, true);
+    }
+
+    const auto bins = make_histogram(input.numbers, input.bin_count);
     show_histogram_svg(bins);
-    getch();
-    return 0;
 }
+