code: сделаны функции

main.cpp

@@ -3,77 +3,110 @@
 #include<cmath>
 
 using namespace std;
-int main()
-{
-	size_t SCREEN_WIDTH;
+
+struct Input {
+    vector<double> numbers;
+    size_t bin_count{};
+    size_t SCREEN_WIDTH{};
+    size_t number_count{};
+
+};
+
+Input
+input_data() {
 
 
-
-	size_t number_count;
+Input in;
 cerr << "Enter number count: ";
-	cin >> number_count;
+cin >> in.number_count;
+in.numbers.resize(in.number_count);
+ for (size_t i = 0; i < in.number_count; i++) {
+        cin >> in.numbers[i];
+    }
+cerr<<"Enter bin count:";
+cin >> in.bin_count;
 
 
 
      while (true) {
         cerr << "Screen width: ";
-        cin >> SCREEN_WIDTH;
-		if (SCREEN_WIDTH < 7) {
+        cin >> in.SCREEN_WIDTH;
+		if (in.SCREEN_WIDTH < 7) {
             cerr << "<7"; cerr << endl;
             continue;
 		}
-		if (SCREEN_WIDTH > 80) {
+		if (in.SCREEN_WIDTH > 80) {
             cerr << ">80";  cerr << endl;
             continue;
 		}
 
-		if (SCREEN_WIDTH < (number_count / 3)){
+		if (in.SCREEN_WIDTH < (in.number_count / 3)){
             cerr << "<number_count/3";  cerr << endl;
             continue;
 		}
         break;
 	}
-	const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
-
-	vector<double> numbers(number_count);
-	cerr << "Enter numbers: ";
-	for (int i = 0; i < number_count; i++)
-	{
-		cin >> numbers[i];
-
+	return in;
 }
-	double min = numbers[0];
-	double max = numbers[0];
-	for (double x : numbers)
-	{
-		if (x < min)
+
+void
+find_minmax(const vector<double>& numbers, double& min, double& max) {
+    min = numbers[0];
+    max = numbers[0];
+    for (double x : numbers) {
+        if (x < min) {
             min = x;
-		else if (x > max)
+        }
+        else if (x > max) {
             max = x;
         }
-	size_t bin_count;
-	cerr<<"Enter bin count:";
-	cin >> bin_count;
-	vector<size_t> bins(bin_count);
+    }
+}
+
+std::vector<double>
+make_histogram(const std::vector<double>& numbers, size_t bin_count) {
+    vector<double> bins(bin_count);
+
+    double min = 0, max = 0;
+    find_minmax(numbers, min, max);
+
     double bin_size = (max - min) / bin_count;
-	for (size_t i = 0; i < number_count; i++)
-	{
+    for (int i = 0; i < numbers.size(); i++) {
         bool found = false;
-		for (size_t j = 0; (j < bin_count - 1) && !found; j++)
-		{
-			auto low = min + j * bin_size;
-			auto high = min + (j + 1) * bin_size;
-			if ((low <= numbers[i]) && (numbers[i] < high))
-			{
+        for (int 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)) {
                 bins[j]++;
                 found = true;
             }
         }
-		if (!found)
-		{
+        if (!found) {
             bins[bin_count - 1]++;
         }
     }
+    return bins;
+}
+
+int main()
+{
+    auto in = input_data();
+
+    double min, max;
+
+    find_minmax(in.numbers, min, max);
+
+
+
+	const size_t MAX_ASTERISK = in.SCREEN_WIDTH - 3 - 1;
+
+
+
+auto bins = make_histogram(in.numbers, in.bin_count);
+
+
+
+
 
 	double mxbins = bins[0];
 
@@ -88,7 +121,7 @@ int main()
 		k = MAX_ASTERISK / mxbins;
 	else
 		k = 1;
-	for (size_t i = 0; i < bin_count; i++)
+	for (size_t i = 0; i < in.bin_count; i++)
 	{
 		if (bins[i] < 10) {
 			cout << "  " << bins[i] << "|";
@@ -108,3 +141,4 @@ int main()
 		cout << endl;
 	}
 }
+