code: добавлена обработка ошибок

main.cpp

@@ -1,4 +1,90 @@
 #include <iostream>
+#include <sstream>
+#include <string>
+#include <vector>
+#include <curl/curl.h>
+#include "histogram.h"
+#include "text.h"
+#include "svg.h"
+
+using namespace std;
+
+struct Input {
+    vector<double> numbers;
+    size_t bin_count{};
+};
+
+Input input_data(istream& in, bool prompt) {
+    if (prompt) {
+        cerr << "Enter number count, numbers and bin count: ";
+    }
+
+    size_t number_count;
+    in >> number_count;
+
+    Input input;
+    input.numbers.resize(number_count);
+
+    for (size_t i = 0; i < number_count; i++) {
+        in >> input.numbers[i];
+    }
+
+    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_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) {
+        curl_easy_setopt(curl, CURLOPT_URL, address.c_str());
+
+        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_data);
+        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &buffer);
+
+        CURLcode res = curl_easy_perform(curl);
+        if (res != CURLE_OK) {
+            cerr << "cURL error: " << curl_easy_strerror(res) << endl;
+            curl_easy_cleanup(curl);
+            exit(1);
+        }
+
+        curl_easy_cleanup(curl);
+    } else {
+        cerr << "curl_easy_init() failed" << endl;
+        exit(1);
+    }
+
+    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);
+
+    return 0;
+}
+/*#include <iostream>
 #include <vector>
 #include "histogram.h"
 #include "svg.h"
@@ -9,7 +95,7 @@ struct Input{
     vector<double> numbers;
     size_t bin_count{};
 
-}
+};
 
 
 Input input_data(){
@@ -39,5 +125,5 @@ int main(){
     show_histogram_svg(bins);
 
 
-}
+}*/
 

marks.txt

@@ -0,0 +1,3 @@
+10
+3 3 4 4 4 4 4 5 5 5
+3

svg.h

@@ -3,7 +3,7 @@
 
 #include <vector>
 void
-show_histogram_svg(const std::vector<size_t>& bins, size_t number_count, size_t bin_count);
+show_histogram_svg(const std::vector<size_t>& bins);
 
 
 #endif // SVG_H_INCLUDED