code: разделение на функции

main.cpp

@@ -2,55 +2,50 @@
 #include <conio.h>
 #include <vector>
 using namespace std;
-int main()
-{
-    const size_t SCREEN_WIDTH = 80;
-    const size_t MAX_ASTER = SCREEN_WIDTH - 3 - 1;
-    int i, j;
-    double num;
-    size_t number_count, bin_count;
-    cerr << "Enter number count: " << "\n";
+struct Input {
+    vector<double> numbers;
+    size_t bin_count{};
+};
+
+Input input_data() {
+    Input in;
+    size_t number_count;
     cin >> number_count;
-    vector<double> numbers(number_count);
-    cerr << "Enter number: " << "\n";
-    for (i = 0; i < number_count; i++)
-    {
-        cin >> num;
-        numbers[i] = num;
+    in.numbers.resize(number_count);
+    for (size_t i = 0; i < number_count; i++) {
+        cin >> in.numbers[i];
     }
-    cerr << "Enter bin count: " << "\n";
-    cin >> bin_count;
-    vector<size_t> bins(bin_count);
-    for (i = 0; i < bin_count; i++)
+    cin >> in.bin_count;
+    return in;
+}
+
+void find_minmax(const vector<double>& numbers, double& min, double& max) {
+    min = numbers[0];
+    max = numbers[0];
+    for (double x : numbers)
     {
-        bins[i] = 0;
-    }
-    double min_number = numbers[0];
-    double max_number = numbers[0];
-    for (i = 1; i < bin_count, i++){
-        if (bins[i] < min_number)
+        if (x < min)
         {
-            min_number = bins[i];
+            min = x;
         }
-        else if (bins[i] > max_number)
+        if (x > max)
         {
-            max_number = bins[i];
+            max = x;
         }
     }
+}
 
-    for (double x : numbers)
+vector<size_t> make_histogram(vector<double>& numbers, size_t bin_count)
+{
+    double min_number, max_number;
+    find_minmax(numbers, min_number, max_number);
+    vector<size_t> bins(bin_count);
+    for (int i = 0; i < bin_count; i++)
     {
-        if (x < min_number)
-        {
-            min_number = x;
-        }
-        else if (x > max_number)
-        {
-            max_number = x;
-        }
+        bins[i] = 0;
     }
     double bin_size = (max_number - min_number) / 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++)
@@ -68,7 +63,12 @@ int main()
             bins[bin_count - 1]++;
         }
     }
-    size_t max_bin_capacity = bins[0];
+    return bins;
+}
+
+void find_max_capacity(vector<size_t>& bins, size_t& max_bin_capacity)
+{
+    max_bin_capacity = bins[0];
     for (size_t x : bins)
     {
         if (x > max_bin_capacity)
@@ -76,8 +76,14 @@ int main()
             max_bin_capacity = x;
         }
     }
+}
+
+void show_histogram_text(vector<size_t>& bins, size_t max_asterisk)
+{
+    size_t max_bin_capacity{};
+    find_max_capacity(bins, max_bin_capacity);
     size_t height = 0;
-    for (i = 0; i < bin_count; i++)
+    for (int i = 0; i < bins.size(); i++)
     {
         if (bins[i] < 10)
         {
@@ -89,19 +95,30 @@ int main()
         }
         if (bins[i] >= 100)
         {
-            cout <<  bins[i] << "|";
+            cout << bins[i] << "|";
         }
-        if (bins[i] > MAX_ASTER){
-        height = MAX_ASTER * (static_cast<double>(bins[i]) / max_bin_capacity);
+        if (max_bin_capacity > max_asterisk)
+        {
+            height = max_asterisk * (static_cast<double>(bins[i]) / max_bin_capacity);
         }
-        if (bins[i] < MAX_ASTER){
+        else
+        {
             height = bins[i];
         }
-        for (j = 0; j < height; j++)
+        for (int j = 0; j < height; j++)
         {
             cout << "*";
         }
         cout << "\n";
     }
+}
+
+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, MAX_ASTERISK);
     return 0;
 }