code: исправление ошибок, чистовой вариант

project/main.cpp

@@ -4,6 +4,10 @@
 #include "histogram.h"
 #include "text.h"
 #include "svg.h"
+#include <curl/curl.h>
+#include <sstream>
+#include <string>
+
 using namespace std;
 
 struct Input
@@ -17,27 +21,67 @@ input_data(istream& in, bool prompt)
 {
     size_t number_count;
     if (prompt)
+    {
         cerr << "Enter number count: ";
+    }
     in >> number_count;
 
     Input ik;
     ik.numbers.resize(number_count);
     for (size_t i = 0; i < number_count; i++)
     {
-        cin >> ik.numbers[i];
+        in >> ik.numbers[i];
     }
+    if (prompt)
+    {
         cerr << "Enter bin count: ";
-    cin>> ik.bin_count;
+    }
+    in>> ik.bin_count;
     return ik;
 }
 
-
-
-int main()
+size_t write_data(void* items, size_t item_size, size_t item_count, void* ctx)
 {
-    auto in = input_data(cin, true);
-    auto bins = make_histogram(in.numbers, in.bin_count);
-    show_histogram_svg(bins);
-    getch();
-    return 0;
+    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, 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 != CURLE_OK)
+        {
+            fprintf(stderr, "curl_easy_perform() failed: %s\n",curl_easy_strerror(res));
+            exit(1);
+        }
+        curl_easy_cleanup(curl);
+    }
+    return input_data(buffer, false);
+}
+
+int main(int argc, char* argv[])
+{
+    Input input;
+    if (argc > 1)
+    {
+        input = download(argv[1]);
+    }
+    else
+    {
+        input = input_data(cin, true);
+    }
+    const auto bins = make_histogram(input.numbers, input.bin_count);
+    show_histogram_svg(bins);
 }

project/pr3.cbp

@@ -13,7 +13,12 @@
 				<Option compiler="gcc" />
 				<Compiler>
 					<Add option="-g" />
+					<Add directory="curl/include" />
 				</Compiler>
+				<Linker>
+					<Add library="libcurl.dll.a" />
+					<Add directory="curl/lib" />
+				</Linker>
 			</Target>
 			<Target title="Release">
 				<Option output="bin/Release/pr1" prefix_auto="1" extension_auto="1" />