code: добавлен bool prompt

main.cpp

@@ -10,18 +10,24 @@ struct Input {
     size_t bin_count{};
 };
 Input
-input_data(istream& in){
+input_data(istream& in, bool prompt){
     size_t number_count;
-	cerr << "Enter number count: ";
+    if(prompt){
+        cerr << "Enter number count: ";
+    }
     cin >> number_count;
     Input inp;
     inp.numbers.resize(number_count);
     for (size_t i = 0; i < number_count; i++)
     {
-        cerr << "Enter Num[" << i << "]: ";
+        if (prompt){
+            cerr << "Enter Num[" << i << "]: ";
+        }
         cin >> inp.numbers[i];
     }
-    cerr << "Enter bin count: ";
+    if (prompt) {
+        cerr << "Enter bin count: ";
+    }
     cin >> inp.bin_count;
     return inp;
 }
@@ -31,7 +37,7 @@ input_data(istream& in){
 
 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);