diff --git a/main.cpp b/main.cpp
index f14eca6..2bd6be5 100644
--- a/main.cpp
+++ b/main.cpp
@@ -13,20 +13,26 @@ struct Input {
     size_t bin_count{};
 };
 
-Input input_data(istream& in) {
+Input input_data(istream& in, bool prompt) {
 
     size_t number_count;
-    cerr << "Enter number count: ";
+    if (prompt){
+        cerr << "Enter number count: ";
+    }
     in >> number_count;
 
     Input on;
 
-    cerr << "Enter bin count: ";
+    if (prompt){
+        cerr << "Enter bin count: ";
+    }
     in >> on.bin_count;
 
     on.numbers.resize(number_count);
 
-    cerr << "Enter numbers: ";
+    if (prompt){
+        cerr << "Enter numbers: ";
+    }
     for (size_t i = 0; i < number_count; i++) {
         in >> on.numbers[i];
     }
@@ -34,7 +40,8 @@ Input input_data(istream& in) {
 };
 
 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);
     show_histogram_text(bins, in.bin_count);
     show_histogram_svg(bins);