code: добавлены функции расчёта и вывода текстовой гистограммы

main.cpp

@@ -3,13 +3,15 @@
 
 using namespace std;
 
-struct Input {
+struct Input
+{
     vector<double> numbers;
     size_t bin_count{};
 };
 
 Input
-input_data() {
+input_data()
+{
     size_t number_count;
     cerr << "Enter number count: ";
     cin >> number_count;
@@ -25,10 +27,12 @@ input_data() {
 }
 
 void
-find_minmax(const vector<double>& numbers, double& min, double& max) {
+find_minmax(const vector<double>& numbers, double& min, double& max)
+{
     min = numbers[0];
     max = numbers[0];
-    for (double x : numbers) {
+    for (double x : numbers)
+    {
         if (x > max )
         {
             max = x;
@@ -40,20 +44,18 @@ find_minmax(const vector<double>& numbers, double& min, double& max) {
     }
 }
 
-int main()
+vector<size_t>
+make_histogram(const vector<double>& numbers, size_t& bin_count)
 {
-    const size_t SCREEN_WIDTH = 80;
-    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
-    Input in = input_data();
-    vector<size_t> bins(in.bin_count);
     double min = 0;
     double max = 0;
-    find_minmax(in.numbers, min, max);
-    auto bin_size = (max - min)/in.bin_count;
-    for (double number : in.numbers)
+    find_minmax(numbers, min, max);
+    auto bin_size = (max - min)/bin_count;
+    vector<size_t> bins(bin_count);
+    for (double number : numbers)
     {
         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 lo = min + j * bin_size;
             auto hi = min + (j + 1) * bin_size;
@@ -65,15 +67,23 @@ int main()
         }
         if (!found)
         {
-            bins[in.bin_count - 1]++;
+            bins[bin_count - 1]++;
         }
     }
+    return bins;
+}
+
+void
+show_histogram_text(const vector<size_t>& bins, size_t& bin_count) {
+    const size_t SCREEN_WIDTH = 80;
+    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
     size_t max_count = 0;
-    for (size_t s = 0; s < in.bin_count; s++) {
+    for (size_t s = 0; s < bin_count; s++)
+    {
         if (bins[s] > max_count)
-            {
-                max_count = bins[s];
-            }
+        {
+            max_count = bins[s];
+        }
     }
     for (size_t bin : bins)
     {
@@ -86,7 +96,8 @@ int main()
             cout << " ";
         }
         cout << bin << "|";
-        if (max_count > MAX_ASTERISK) {
+        if (max_count > MAX_ASTERISK)
+        {
             size_t count = bin;
             size_t height = MAX_ASTERISK * (static_cast<double>(count) / max_count);
             for (size_t t = 0; t < height; t++)
@@ -101,3 +112,10 @@ int main()
         cout << endl;
     }
 }
+
+int main()
+{
+    Input in = input_data();
+    vector<size_t> bins = make_histogram(in.numbers, in.bin_count);
+    show_histogram_text(bins, in.bin_count);
+}