code: 2 вариант

main.cpp

@@ -63,13 +63,15 @@ 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);
         if (res != 0)
             {
             cout << curl_easy_strerror(res);
             exit(1);
             }
-        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, &buffer);
 
         curl_easy_cleanup(curl);
     }
@@ -79,14 +81,44 @@ download(const string& address) {
 
 int main(int argc, char* argv[])
 {
+    int ind;
+    const char* format;
     Input input;
-    if (argc > 1) {
+    if (argc > 1)
+    {
+        for (int i = 0; i < argc; i++)
+        {
+            if (strcmp(argv[i], static_cast<const char*>("-format")) == 0) //Ôóíêöèÿ strcmp âûïîëíÿåò ïîðÿäêîâîå ñðàâíåíèå ñòðîê; static_cast ïðèìåíÿåòñÿ äëÿ ïðèâåäåíèÿ òèïîâ
+            {
+                ind = i;
+            }
+        }
+
+        if ((ind+1) < argc)
+        {
+            format = argv[ind + 1];
+            if (!(strcmp(format, static_cast<const char*>("text")) == 0) && !(strcmp(format, static_cast<const char*>("svg")) == 0))
+            {
+                cout << "unknown format";
+                return 0;
+            }
+        }
+        else
+        {
+            cout << "write program format";
+            return 0;
+        }
         input = download(argv[1]);
-    } else {
+    }
+    else
+    {
         input = input_data(cin, true);
     }
 
-   const auto bins = make_histogram(input.numbers, input.bin_count);
-    show_histogram_svg(bins);
-    return 0;
+    const auto bins = make_histogram(input.numbers, input.bin_count);
+
+    if (strcmp(format, static_cast<const char*>("text")) == 0) {
+    show_histogram_text(bins, input.bin_count); }
+    else if (strcmp(format, static_cast<const char*>("svg")) == 0) {
+    show_histogram_svg(bins); }
 }