Добавлен bool prompt для вывода рекомендаций

main.cpp

@@ -12,26 +12,33 @@ struct Input {
     size_t bin_count{};
 };
 Input
-input_data(istream& in){
+input_data(istream& in, bool prompt){
     size_t number_count;
+    if (prompt){
 	cerr << "Enter number count: ";
+    }
     cin >> number_count; //Êîë-âî ÷èñåë
     Input inp;
     inp.numbers.resize(number_count);
 
     for (size_t i = 0; i < number_count; i++)
     {
+        if (prompt){
                 cerr << "Enter Num[" << i << "]: ";
+        }
+
         cin >> inp.numbers[i]; //Ââîä ÷èñåë
     }
+    if (prompt) {
             cerr << "Enter bin count: ";
+    }
     cin >> inp.bin_count; //Êîë-âî êîðçèí
     return inp;
 }
 
 int main()
 {
-    auto in = input_data(cin);
+    auto in = input_data(cin, true);
     auto bins = make_histogram(in.numbers, in.bin_count);
     auto borders = make_borders(in.numbers, in.bin_count);
     show_histogram_svg(bins, borders, in.bin_count);