diff --git a/vector.cpp b/vector.cpp
index 0882b8c..0d77b5c 100644
--- a/vector.cpp
+++ b/vector.cpp
@@ -29,27 +29,32 @@ struct Input {
 //
 //	return in;
 //}
-Input input_data(istream& in)
-{
-	size_t number_count;
-	cin >> number_count;
-	Input data;
-	data.numbers.resize(number_count);
-	for (size_t i = 0; i < number_count; i++)
-	{
-		cin >> data.numbers[i];
+Input input_data(istream& in,bool prompt) {
+
+    if (prompt == true) cerr << "Enter number_count: ";
+
+    size_t number_count;
+    in >> number_count;
+
+    Input data;
+    data.numbers.resize(number_count);
+
+    if (prompt == true) cerr << "Enter numbers: ";
 
-	}
+    for (size_t i = 0; i < number_count; i++) {
+        in >> data.numbers[i];
+    }
 
-	cin >> data.bin_count;
+    if (prompt == true) cerr << "Enter bin count: ";
 
+    in >> data.bin_count;
 	return data;
 }
 
 
 int main()
 {
-	auto in = input_data(cin);
+	auto in = input_data(cin,false);
 	vector <size_t> bins = make_histogram(in.numbers, in.bin_count);
 	show_histogram_svg(bins, in.bin_count);
 }