добавление параметра bool prompt

main.cpp

@@ -10,10 +10,13 @@ struct Input{
     size_t bin_count{};
 };
 Input
-input_data(istream& in)
+input_data(istream& in, bool prompt=false)
 {
     Input inn;
     size_t number_count;
+    if (prompt){
+        cerr << "Enter count, numbers and bin_count\n";
+    }
     in >> number_count;
     inn.numbers.resize(number_count);