code: вывод гистрограммы

.gitignore

@@ -0,0 +1,5 @@
+/bin
+/obj
+/*.layout
+/*.depend
+/*.o

main.cpp

@@ -2,71 +2,120 @@
 #include <vector>
 
 using namespace std;
-int main() {
+
-    const size_t SCREEN_WIDTH = 80;
+struct Input
-    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
+{
+    vector<double> numbers;
+    size_t bin_count{};
+};
+
+Input
+input_data()
+{
     size_t number_count;
-    size_t max_count = 0;
+    cerr << "Enter number count: ";
-    cerr << "Enter number count:";
     cin >> number_count;
-    vector<double> numbers(number_count);
+    Input in;
-    cerr << "Enter numbers:";
+    in.numbers.resize(number_count);
-    for (int i = 0; i < number_count; i++) {
+    for (size_t i = 0; i < number_count; i++)
-        cin >> numbers[i];
+    {
+        cin >> in.numbers[i];
     }
+    cerr << "Enter bin count: ";
+    cin >> in.bin_count;
+    return in;
+}
 
-
+void
-    size_t bin_count;
+find_minmax(const vector<double>& numbers, double& min, double& max)
-    cerr << "Enter bin count:";
+{
-    cin >> bin_count;
+    min = numbers[0];
-    vector<size_t> bins(bin_count);
+    max = numbers[0];
-    double min = numbers[0];
+    for (double x : numbers)
-    double max = numbers[0];
+    {
-    for (double x : numbers) {
+        if (x > max )
-        if (x < min) {
+        {
-            min = x;
-        }
-        else if (x > max) {
             max = x;
         }
+        if (x < min)
+        {
+            min = x;
+        }
     }
-    double bin_size = (max - min) / bin_count;
+}
-    for (size_t i = 0; i < number_count; i++) {
+
+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++) {
+        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 <= numbers[i]) && (numbers[i] < hi)) {
+            if ((lo <= number) && (number < hi))
+            {
                 bins[j]++;
                 found = true;
             }
         }
-        if (!found) {
+        if (!found)
+        {
             bins[bin_count - 1]++;
         }
-        for (size_t i = 0; i < bin_count; i++) {
-            if (bins[i] > max_count) {
-                max_count = bins[i];
-            }
-        }
     }
-    double kof = double(MAX_ASTERISK) / max_count;
+    return bins;
-    if (kof > 1) {
+}
-        kof = 1;
+
+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 < bin_count; s++)
+    {
+        if (bins[s] > max_count)
+        {
+            max_count = bins[s];
+        }
     }
-    for (size_t bin : bins) {
+    for (size_t bin : bins)
-        if (bin < 100) {
+    {
+        if (bin <100)
+        {
             cout << " ";
         }
-        if (bin < 10) {
+        if (bin <10)
+        {
             cout << " ";
         }
         cout << bin << "|";
-        for (size_t i = 0; i < size_t(bin * kof); i++) {
+        if (max_count > MAX_ASTERISK)
-            cout << "*";
+        {
+            size_t count = bin;
+            size_t height = MAX_ASTERISK * (static_cast<double>(count) / max_count);
+            for (size_t t = 0; t < height; t++)
+            {
+                cout << "*";
+            }
         }
-
+        else for (size_t k = 0; k < bin; k++)
+            {
+                cout << "*";
+            }
         cout << endl;
     }
-    return 0;
+}
+
+int main()
+{
+    Input in = input_data();
+    vector<size_t> bins = make_histogram(in.numbers, in.bin_count);
+    show_histogram_text(bins, in.bin_count);
 }