code: создаем гистограмму отдельно

histogram.cpp

@@ -0,0 +1,46 @@
+#include "histogram.h"
+
+static void find_minmax(const vector<double>& numbers, double& min, double& max)
+{
+    min = numbers[0];
+    max = numbers[0];
+    for (double x : numbers)
+    {
+        if (x > max )
+        {
+            max = x;
+        }
+        if (x < min)
+        {
+            min = x;
+        }
+    }
+}
+
+vector<size_t>
+make_histogram(const vector<double>& numbers, size_t& bin_count)
+{
+    double min = 0;
+    double max = 0;
+    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 < bin_count - 1) && !found; j++)
+        {
+             auto lo = min + j * bin_size;
+             auto hi = min + (j + 1) * bin_size;
+             if ((lo <= number) && (number < hi))
+            {
+                bins[j]++;
+                found = true;
+            }
+        }
+        if (!found) {
+            bins[bin_count - 1]++;
+        }
+    }
+    return bins;
+}

histogram.h

@@ -0,0 +1,8 @@
+#ifndef HISTOGRAM_H_INCLUDED
+#define HISTOGRAM_H_INCLUDED
+#include <vector>
+
+std::vector<size_t>
+make_histogram(const std::vector<double>& numbers, size_t bin_count);
+
+#endif // HISTOGRAM_H_INCLUDED

main.cpp

@@ -1,5 +1,6 @@
 #include <iostream>
 #include <vector>
+#include "histogram.h"
 
 using namespace std;
 
@@ -23,50 +24,8 @@ input_data() {
     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)
-    {
-        if (x > max )
-        {
-            max = x;
-        }
-        if (x < min)
-        {
-            min = x;
-        }
-    }
-}
-vector<size_t>
-make_histogram(const vector<double>& numbers, size_t& bin_count)
-{
-    double min = 0;
-    double max = 0;
-    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 < bin_count - 1) && !found; j++)
-        {
-             auto lo = min + j * bin_size;
-             auto hi = min + (j + 1) * bin_size;
-             if ((lo <= number) && (number < hi))
-            {
-                bins[j]++;
-                found = true;
-            }
-        }
-        if (!found) {
-            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;