code: добавлен параметр prompt для вывода подсказок

main.cpp

@@ -14,11 +14,11 @@ struct Input {
 };
 
 Input
-input_data(istream& in_stream) {
+input_data(istream& in_stream,bool prompt) {
     size_t number_count;
     Input in;
 
-    cerr << "Enter number count: ";
+    if (prompt) cerr << "Enter number count: ";
     in_stream >> number_count;
     vector<double> numbers(number_count);
 
@@ -28,7 +28,7 @@ input_data(istream& in_stream) {
         in_stream >> in.numbers[i];
     }
 
-    cerr << "Enter bins count and colors: ";
+    if (prompt) cerr << "Enter bins count and colors: ";
     in_stream >> in.bin_count;
     vector<string> colors(in.bin_count);
     in.colors.resize(in.bin_count);
@@ -37,7 +37,7 @@ input_data(istream& in_stream) {
         in_stream >> in.colors[i];
         bool check = check_color(in.colors[i]);
         while (!check) {
-        cerr << "Incorrect input. Color doesn't contain # or has spaces." << endl;
+        if (prompt) cerr << "Incorrect input. Color doesn't contain # or has spaces." << endl;
         in_stream >> in.colors[i];
         check = check_color(in.colors[i]);
         }
@@ -47,7 +47,7 @@ input_data(istream& in_stream) {
 
 int main()
 {
-    auto in = input_data(cin);
+    auto in = input_data(cin,true);
     vector<size_t> bins = make_histogram(in.numbers, in.bin_count);
     //show_histogram_text(bins, in.bin_count);
     show_histogram_svg(bins, in.colors);