code: add bool prompt

main.cpp

@@ -17,8 +17,12 @@ struct Input
 
 
 Input
-input_data(istream& in){
-    cerr << "Input numbers count: ";
+input_data(istream& in, bool prompt)
+{
+    if (prompt)
+    {
+        cerr << "Enter number count: ";
+    }
     size_t number_count;
     in >> number_count;
 
@@ -37,13 +41,14 @@ input_data(istream& in){
 
 int main()
 {
-
-	Input in = input_data(cin);
+	auto in = input_data(cin, true);
 
 	auto bins = make_histogramm(in.numbers, in.bin_count);
 
 	show_histogram_svg(bins);
 
+	getch();
+
 	return 0;
 }