CODE: изменены параметры функции input_data

Programm/main.cpp

@@ -10,28 +10,30 @@ struct Input
     size_t bin_count;
 };
 
-Input input_data()
+Input input_data(std::istream &in, const bool& prompt)
 {
     size_t number_count;
-    std::cerr << "Enter number count: ";
-    std::cin >> number_count;
-    Input in;
-    in.numbers.resize(number_count);
+    if (prompt)
+    {
+        std::cerr << "Enter number count: ";
+    }
+    in >> number_count;
+    Input inn;
+    inn.numbers.resize(number_count);
 
     for (size_t i = 0; i < number_count; i++)
     {
-        std::cin >> in.numbers[i];
+        std::cin >> inn.numbers[i];
     }
 
     std::cerr << "Enter bin count: ";
-    std::cin >> in.bin_count;
-    return in;
+    std::cin >> inn.bin_count;
+    return inn;
 }
 
-
 int main()
 {
-    Input in = input_data();
+    auto in = input_data(std::cin);
     auto bins = make_histogram(in.numbers, in.bin_count);
     show_histogram_svg(bins);
     return 0;