Add files

Histogram/Histogram.cbp

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+<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
+<CodeBlocks_project_file>
+	<FileVersion major="1" minor="6" />
+	<Project>
+		<Option title="Histogram" />
+		<Option pch_mode="2" />
+		<Option compiler="gcc" />
+		<Build>
+			<Target title="Debug">
+				<Option output="bin/Debug/Histogram" prefix_auto="1" extension_auto="1" />
+				<Option object_output="obj/Debug/" />
+				<Option type="1" />
+				<Option compiler="gcc" />
+				<Compiler>
+					<Add option="-g" />
+				</Compiler>
+			</Target>
+			<Target title="Release">
+				<Option output="bin/Release/Histogram" prefix_auto="1" extension_auto="1" />
+				<Option object_output="obj/Release/" />
+				<Option type="1" />
+				<Option compiler="gcc" />
+				<Compiler>
+					<Add option="-O2" />
+				</Compiler>
+				<Linker>
+					<Add option="-s" />
+				</Linker>
+			</Target>
+		</Build>
+		<Compiler>
+			<Add option="-Wall" />
+			<Add option="-fexceptions" />
+		</Compiler>
+		<Unit filename="main.cpp" />
+		<Extensions>
+			<lib_finder disable_auto="1" />
+		</Extensions>
+	</Project>
+</CodeBlocks_project_file>

Histogram/main.cpp

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+#include <iostream>
+#include <vector>
+
+
+using namespace std;
+
+int main()
+{
+    const size_t SCREEN_WIDTH = 80;
+    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
+
+
+    int number_count, bucket;
+
+    cerr << "Enter number count: "; cin >> number_count;
+
+    std::cerr << "Enter numbers: \n";
+    vector <double> numbers(number_count);
+    for (int i = 0; i < number_count; i++) cin >> numbers[i];
+
+    float min = numbers[0];
+    float max = numbers[0];
+
+    for (float x : numbers)
+    {
+        if (x < min) min = x;
+        else if (x > max) max = x;
+    }
+
+    if (max == min) {// ïðîâåðêà íà àíîìàëèþ
+        std::cout << " Unable to create a histogram." << std::endl;
+        return 1;
+    }
+
+    cerr << "Enter bucket: "; cin >> bucket;
+
+    float k = (max - min) / bucket;
+
+    if (numbers.empty()) {//áûëè ëè ââåäåíû ÷èñëà
+        std::cout << "Empty. unable to  create histogram." << std::endl;
+        return 1;
+    }
+
+    vector <int> stolb(bucket);
+    vector <int> proz(stolb);
+
+    for (int j = 0; j < bucket; j++) stolb[j] = 0;
+
+    for (int i = 0; i < number_count; i++)
+    {
+        bool flag = false;
+        for (int j = 0; (j < bucket && !flag); j++)
+        {
+            if (numbers[i] >= (min + k * j) && numbers[i] < (min + k * (1 + j)))
+            {
+                stolb[j]++;
+                flag = true;
+
+            }
+        }
+        if (!flag) stolb[bucket - 1]++;
+    }
+
+    int maxlen = 0;
+    for (int j = 0; j < bucket; j++)
+    {
+        if (maxlen < stolb[j]) maxlen = stolb[j];
+    }
+
+    for (int j = 0; j < bucket; j++)
+    {
+        if (stolb[j] < 100) cout << " ";
+        if (stolb[j] < 10) cout << "";
+        cout << stolb[j] << " |";
+        size_t height = stolb[j];
+        if (maxlen > MAX_ASTERISK)
+        {
+            if (maxlen != stolb[j]) height = MAX_ASTERISK * (static_cast <float>(stolb[j]) / maxlen);
+            else if (maxlen == stolb[j]) height = MAX_ASTERISK;
+        }
+        for (int i = 0; i < height; i++) cout << "*";
+        cout << "\n";
+    }
+
+    return 0;
+}