code: add doctest.h

main.cpp

@@ -3,50 +3,81 @@
 
 using namespace std;
 
-int main()
+void
+find_minmax(const vector<double> numbers, double& min, double& max)
 {
-    const size_t SCREEN_WIDTH = 80;
+    min = numbers[0];
-    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
+    max = numbers[0];
-    size_t number_count, bin_count, i, j;
+    size_t number_count = numbers.size();
-
+    for (size_t i = 1; i < number_count; i++)
-    cerr << "Enter number count: ";
+    {
-    cin >> number_count;
+        if (numbers[i] < min)
+        {
+            min = numbers[i];
+        }
+        else if (numbers[i] > max)
+        {
+            max = numbers[i];
+        }
+    }
+}
 
 
-    vector<double> numbers(number_count);
 
-    for (i=0; i<number_count; i++)
+struct Input
 {
-        cin>>numbers[i];
+    vector<double> numbers;
+    size_t bin_count{};
+};
 
-    }
 
-    cerr << "Enter bin_count: ";
-    cin >> bin_count;
 
 
-    vector<size_t> bins(bin_count);
 
-    double min = numbers[0];
+Input
-    double max = numbers[0];
+input_data()
-    for (double x : numbers)
 {
-        if (x < min)
+    size_t number_count;
+    cin >> number_count;
+
+
+    vector<double> numbers(number_count);
+    for (size_t i = 0; i < number_count; i++)
     {
-            min = x;
+        cin >> numbers[i];
     }
-        else if (x > max)
+
+    size_t bin_count;
+    cin >> bin_count;
+
+    Input in;
+    in.numbers.resize(number_count);
+
+    for (size_t i = 0; i < number_count; i++)
     {
-            max = x;
+        cin >> in.numbers[i];
     }
+    cin >> in.bin_count;
+    return in;
+
 }
 
+
+
+vector<size_t>
+make_histogram(vector<double> numbers, size_t bin_count)
+{
+
+    double min, max;
+    vector<size_t> bins(bin_count);
     double bin_size = (max - min) / bin_count;
+    find_minmax(numbers, min, max);
+    size_t number_count = numbers.size();
 
-    for (i = 0; i < number_count; i++)
+    for (size_t i = 0; i < number_count; i++)
     {
         bool found = false;
-        for (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;
@@ -61,41 +92,17 @@ int main()
             bins[bin_count - 1]++;
         }
     }
-
-    size_t max_count = 76;
-
-    for (i=1; i<bin_count; i++)
-    {
-        if (bins[i] > max_count && bins[i] > 76)
-            max_count=bins[i];
 }
 
 
-    //for (i=0; i<bins[bin_count-1]; i++)
-    {
-        //for (j=0; j<bin_count; j++)
-        {
-            //if (bins[j]>i)
-                //cout<<"*";
-            //else
-                //cout<<" ";
-        }
-        //cout<<endl;
-    }
 
 
-    for(i=0; i<bin_count;i++){
 
-    if (bins[i]>=100)
-    cout<<bins[i]<<"|";
-    if (bins[i]<100 && bins[i]>=10)
-    cout<<" "<<bins[i]<<"|";
-    if (bins[i]<10)
-    cout<<"  "<<bins[i]<<"|";
-    size_t height = 76 * (static_cast<double>(bins[i]) / max_count);
-    for(j=0;j< height;j++)
-    cout<<"*";
-    cout<<endl;}
 
-    return 0;
+int main()
+{
+
+    auto in = input_data();
+    auto bins = make_histogram(in.numbers, in.bin_count);
+    //show_histogram_text(bins, ...);
 }