code: добавлена проверка на вывод подсказок cerr

CommonVar.cpp

@@ -13,12 +13,16 @@ struct Input {
 };
 
 Input
-InputData(istream& in) {
+InputData(istream& in, bool prompt) {
 	Input inp;
 	size_t NumberCount;
+	if (prompt) {
 		cerr << "Enter number count: ";
+	}
 	in >> NumberCount;
+	if (prompt) {
 		cerr << "Enter bin count: ";
+	}
 	in >> inp.BinCount;
 	inp.Numbers.resize(NumberCount);
 	for (int i = 0; i < NumberCount; i++) {
@@ -35,7 +39,7 @@ void ShowHistogrammText(vector<size_t> Bins);
 
 int main() {
 	double MaxCount = 0;
-	Input in = InputData(cin);
+	Input in = InputData(cin, true);
 	vector <size_t> Bins(in.BinCount);
 	Bins = MakeHistogram(in.Numbers, in.BinCount, MaxCount);
 	ShowHistogramSvg(Bins);