добавлен bool prompt

main.cpp

@@ -12,7 +12,7 @@ struct Input {
 };
 
 Input
-input_data(istream& in){
+input_data(istream& in, bool prompt){
     size_t number_count;
 	cerr << "Enter number count: ";
     cin >> number_count;
@@ -23,13 +23,15 @@ input_data(istream& in){
         cerr << "Enter Num[" << i << "]: ";
         cin >> inp.numbers[i];
     }
+    if (prompt) {
         cerr << "Enter bin count: ";
+    }
     cin >> inp.bin_count;
     return inp;
 }
 int main()
 {
-    auto in = input_data(cin);
+    auto in = input_data(cin, true);;
     auto bins = make_histogram(in.numbers, in.bin_count);
     show_histogram_svg(bins);