diff --git a/main.cpp b/main.cpp
index 97b642e..8cb87be 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,38 +1,38 @@
 #include <iostream>
 #include <vector>
+#include <string>
 #include "histogram.h"
 #include "text.h"
 #include "svg.h"
-
 using namespace std;
 
-struct Input {
+struct Input
+{
     vector<double> numbers;
     size_t bin_count{};
 };
 
-Input
-input_data() {
+Input input_data()
+{
     size_t number_count;
-    cout << "Enter number count: ";
     cin >> number_count;
     Input in;
     in.numbers.resize(number_count);
     vector<double> numbers(number_count);
     for (size_t i = 0; i < number_count; i++)
-    {
-        cin >> in.numbers[i];
-    }
+    {cin >> in.numbers[i];}
     size_t bin_count;
-    cout << "Enter count bin : ";
     cin >> in.bin_count;
     return in;
 }
 
 
-int main(){
+int main()
+{
+    const size_t SCREEN_WIDTH = 80;
+    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
     auto in = input_data();
-    auto bins = make_histogram(in.numbers, in.bin_count);
-    show_histogram_text(bins);
-       return 0;
+    const std::vector<double> bins = make_histogram(in.numbers, in.bin_count);
+    show_histogram_svg(bins);
+    return 0;
 }