code: добавлен prompt

main.cpp

@@ -14,21 +14,23 @@ struct Input {
 };
 
 Input
-input_data(istream& stream) {
+input_data(istream& stream, bool prompt) {
     size_t number_count;
+    if (prompt) {
             cerr << "Enter number count: ";
+    }
     stream >> number_count;
     Input in;
+    if (prompt) {
+            cerr << "Enter bin count: ";
+    }
+    stream >> in.bin_count;
     vector<double> numbers(in.number_count);
     in.numbers.resize(in.number_count);
     for (size_t i = 0; i < in.number_count; i++) {
         stream >> in.numbers[i];
     }
-
     size_t bin_count;
-    cerr << "Enter bin count: ";
-    stream >> in.bin_count;
-
     size_t max_count;
     in.max_count = 0;
     return in;
@@ -38,7 +40,8 @@ input_data(istream& stream) {
 
 int main()
 {
-    auto in = input_data(cin);
+    bool prompt = true;
+    auto in = input_data(cin, prompt);
     auto bins = make_histogram(in.numbers, in.bin_count, in.number_count, in.max_count);
     vector<double> test;
     show_histogram_svg(bins, in.max_count, in.bin_count, test);