code: новый параметр prompt

main.cpp

@@ -12,11 +12,13 @@ struct Input
         size_t bin_count{};
     };
 
-Input input_data(istream& stream)
+Input input_data(istream& stream, bool prompt)
 {
     Input in;
     size_t number_count;
-    cerr << "Enter num count >>";
+    if (prompt){
+        cerr << "Enter num count >>";
+    }
     stream >> number_count;
 
     in.numbers.resize(number_count);
@@ -25,7 +27,9 @@ Input input_data(istream& stream)
     {
         stream >> in.numbers[i];
     }
-    cerr << "Enter bin count >>";
+    if (prompt){
+        cerr << "Enter bin count >>";
+    }
     stream >> in.bin_count;
     return in;
 }
@@ -33,7 +37,7 @@ Input input_data(istream& stream)
 int main()
 {
     bool prompt = true;
-    auto in = input_data(cin);
+    auto in = input_data(cin, prompt);
     auto bins = make_histogram(in.numbers, in.bin_count);
     show_histogram_svg(bins);
 }