code: обновление кода

lab34.cpp

@@ -1,35 +1,51 @@
 #include <iostream>
 #include <vector>
+
 using namespace std;
 
-int main() {
-    const size_t SCREEN_WIDTH = 80;
-    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
+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() {
+    Input in;
     size_t number_count;
-    cerr << "Enter amount of numbers \n";
     cin >> number_count;
-    vector<double> numbers(number_count);
+    in.numbers.resize(number_count);
     for (size_t i = 0; i < number_count; i++) {
-        cerr << "Input number " << i + 1 << endl;
-        cin >> numbers[i];
+        cin >> in.numbers[i];
     }
-    double minc, maxc;
-    minc = maxc = numbers[0];
-    for (size_t i = 1; i < number_count; i++) {
-        if (numbers[i] < minc) {
-            minc = numbers[i];
+    size_t bin_count;
+    cin >> in.bin_count;
+    return in;
+}
+
+void
+find_minmax(const vector<double>& numbers, double& min, double& max) {
+    min = numbers[0];
+    for (size_t i = 1; i < numbers.size(); i++) {
+        if (numbers[i] < min) {
+            min = numbers[i];
         }
-        else if (numbers[i] > maxc) {
-            maxc = numbers[i];
+        else if (numbers[i] > max) {
+            max = numbers[i];
         }
     }
-    size_t bin_count;
-    cerr << "Input number of bins \n";
-    cin >> bin_count;
+}
+
+vector<size_t>
+make_histogram(const vector <double>& numbers, size_t bin_count) {
+    double minc, maxc;
+    find_minmax(numbers, minc, maxc);
     vector<size_t> bins(bin_count);
     double bin_size = (maxc - minc) / bin_count;
     size_t bin_max_size = 0;
-    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 = minc + j * bin_size;
@@ -49,11 +65,22 @@ int main() {
             }
         }
     }
+    return bins;
+}
+
+void
+show_histogram_text(vector<size_t> bins) {
+    size_t bin_max_size = 0;
+    for (auto bin : bins) {
+        if (bin_max_size < bin) {
+            bin_max_size = bin;
+        }
+    }
     double k = double(MAX_ASTERISK) / bin_max_size;
     if (k > 1) {
         k = 1;
     }
-    for (size_t bin = 0; bin < bin_count; bin++) {
+    for (size_t bin = 0; bin < bins.size(); bin++) {
         if (bins[bin] < 100) {
             cout << " ";
         }
@@ -61,10 +88,16 @@ int main() {
             cout << " ";
         }
         cout << bins[bin] << "|";
-        for (size_t i = 0; i < bin * k; i++) {
+        for (size_t i = 0; i < bins[bin] * k; i++) {
             cout << "*";
         }
         cout << endl;
     }
+}
+
+int main() {
+    Input in = input_data();
+    auto bins = make_histogram(in.numbers, in.bin_count);
+    show_histogram_text(bins);
     return 0;
 }