все изменения до пункта 4

main.cpp

@@ -1,21 +1,41 @@
 #include <iostream>
 #include <vector>
+
+
 using namespace std;
-int main()
-{
+const size_t SCREEN_WIDTH = 80;
+const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
+
+
+struct Input {
+    vector<double> numbers;
+    size_t bin_count{};
+};
+
+Input
+input_data(){
     size_t number_count;
-cout << "Enter number count: ";
+
+    cerr << "Enter number count: ";
     cin >> number_count;
-vector<double> numbers(number_count);
-for(int i=0; i<number_count; i++){
-cout << "numbers["<<i<<"]=";
-cin >> numbers[i];
-}
-size_t bin_count;
-cout<< "Enter bin count: ";
-cin>> bin_count;
-double min = numbers[0];
-double max = numbers[0];
+
+    Input in;
+    in.numbers.resize(number_count);
+    for(int i;i<number_count;i++)
+    {
+
+        cin >> in.numbers[i];
+    }
+    cerr << "Enter bin count: ";
+
+    cin >> in.bin_count;
+    return in;
+}
+
+void
+find_minmax(vector<double> numbers, double& min, double& max) {
+    min = numbers[0];
+    max = numbers[0];
     for (double x : numbers) {
     if (x < min) {
         min = x;
@@ -24,9 +44,18 @@ else if (x > max) {
         max = x;
     }
 }
+}
+
+vector<size_t>
+make_histogram(vector<double> numbers, size_t bin_count) {
     vector <size_t> bins(bin_count);
+    double min, max;
+    find_minmax(numbers, min, max);
+    size_t countt;
+
     double bin_size = (max - min) / bin_count;
-for (size_t i = 0; i < number_count; i++) {
+
+    for (size_t i = 0; i < numbers.size(); i++) {
     bool found = false;
     for (size_t j = 0; (j < bin_count - 1) && !found; j++) {
         auto lo = min + j * bin_size;
@@ -37,24 +66,56 @@ found = true;
         }
     }
         if (!found) {
-bins[bin_count - 1]++;}
+        bins[bin_count - 1]++;
     }
- float procent;
-    for(size_t i=0; i<bin_count; i++)
-    {
+    }
+        return bins;
 
-        int procent =(bins[i] / number_count)*100;
 
-        cout<<endl;
+}
 
-        cout<<procent<<"%| ";
-        for(size_t j=0; j<=bins[i]-1; j++)
-        {
+void
+show_histogram_text(auto bins, size_t bin_count){
+        size_t max_count = 0;
+        for (size_t i = 0; i < bin_count; i++){
+        if(bins[i]>max_count)
+        max_count = bins[i];
 
+
+        }
+    size_t height;
+    for (size_t i = 0; i < bin_count; i++)
+    {
+        if (bins[i] < 100)
+            cout << " ";
+        if (bins[i] < 10)
+            cout << " ";
+        cout<<bins[i]<<"|";
+        if(max_count>MAX_ASTERISK){
+        for (size_t j = 0; j <(height = MAX_ASTERISK * (static_cast<double>(bins[i]) / max_count)) ; j++)
+        {
             cout<<"*";
         }
         cout<<endl;
         }
+        else
+        {
+           for (size_t j = 0; j <bins[i] ; j++)
+        {
+            cout<<"*";
+        }
+        cout<<endl;
+        }
+    }
+
 
+
+}
+
+
+int main()
+{   Input in = input_data();
+    auto bins = make_histogram(in.numbers, in.bin_count);
+    show_histogram_text(bins, in.bin_count);
     return 0;
 }