diff --git a/main.cpp b/main.cpp
index d1fa10b..f12dd1b 100644
--- a/main.cpp
+++ b/main.cpp
@@ -4,6 +4,7 @@
 #include <stdlib.h>
 using namespace std;
 
+const size_t MAX_ELEMENT = 76;
 struct Input {
     vector<double> numbers;
     size_t bin_count{};
@@ -25,17 +26,16 @@ input_data(){
         cin >> in.numbers[i];
     }
 
-    in.bin_count;
     cerr << "Enter bin count: ";
     cin >> in.bin_count;
     return in;
 }
 
 void
-find_minmax(vector<double> numbers, double& min, double& max){
+find_minmax(const vector<double>& numbers, double& min, double& max){
     min = numbers[0];
     max = numbers[0];
-    for(size_t i=0; i < sizeof(numbers) / sizeof(numbers[0]); i++){
+    for(size_t i=0; i < numbers.size(); i++){
         if (numbers[i] < min)
         {
             min = numbers[i];
@@ -47,27 +47,23 @@ find_minmax(vector<double> numbers, double& min, double& max){
     }
 }
 
-
-int main()
-{
-    const size_t MAX_ELEMENT = 76;
-
-    Input in = input_data();
+vector<size_t>
+make_histogram(const vector<double>& numbers, size_t bin_count){
 
     double min, max;
-    find_minmax(in.numbers, min, max);
+    find_minmax(numbers, min, max);
 
-    vector<size_t> bins(in.bin_count);
-    double bin_size = (max - min) / in.bin_count;
+    vector<size_t> bins(bin_count);
 
-    for (size_t i = 0; i < sizeof(in.numbers) / sizeof(in.numbers[0]); i++)
+    double bin_size = (max - min) / bin_count;
+    for (size_t i = 0; i < numbers.size(); i++)
     {
         bool found = false;
-        for (size_t j = 0; (j < in.bin_count - 1) && !found; j++)
+        for (size_t j = 0; (j < bin_count - 1) && !found; j++)
         {
             auto lower_Bound = min + j * bin_size;
             auto upper_Bound = min + (j + 1) * bin_size;
-            if ((lower_Bound <= in.numbers[i]) && (in.numbers[i] < upper_Bound))
+            if ((lower_Bound <= numbers[i]) && (numbers[i] < upper_Bound))
             {
                 bins[j]++;
                 found = true;
@@ -75,23 +71,34 @@ int main()
         }
         if (!found)
         {
-            bins[in.bin_count - 1]++;
+            bins[bin_count - 1]++;
         }
     }
 
     double max_count = bins[0];
-    for (size_t j=0; j < in.bin_count; j++){
+    for (size_t j=0; j < bin_count; j++){
         if (bins[j] > max_count) {
             max_count = bins[j];
         }
     }
-    vector<size_t> height(in.bin_count);
-    for (size_t j=0; j < in.bin_count; j++){
+    return bins;
+}
+
+void
+show_histogram_text(const vector<size_t> bins, size_t bin_count){
+    double max_count = bins[0];
+    for (size_t j=0; j < bin_count; j++){
+        if (bins[j] > max_count) {
+            max_count = bins[j];
+        }
+    }
+    vector<size_t> height(bin_count);
+    for (size_t j=0; j < bin_count; j++){
         height[j] = MAX_ELEMENT * (bins[j]/max_count);
     }
 
     if (max_count > MAX_ELEMENT){
-        for  (size_t j=0; j < in.bin_count; j++)
+        for  (size_t j=0; j < bin_count; j++)
             {
                 if (bins[j] < 100) {
                     cout << " ";
@@ -108,7 +115,7 @@ int main()
             }
     }
     else {
-        for  (size_t j=0; j < in.bin_count; j++)
+        for  (size_t j=0; j < bin_count; j++)
             {
                 if (bins[j] < 100) {
                     cout << " ";
@@ -125,3 +132,12 @@ int main()
             }
     }
 }
+
+int main()
+{
+
+    auto in = input_data();
+    auto bins = make_histogram(in.numbers, in.bin_count);
+    show_histogram_text(bins, in.bin_count);
+    return 0;
+}