Исходный код.

lab01/lab01.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="lab01" />
+		<Option pch_mode="2" />
+		<Option compiler="gcc" />
+		<Build>
+			<Target title="Debug">
+				<Option output="bin/Debug/lab01" 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/lab01" 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 />
+	</Project>
+</CodeBlocks_project_file>

lab01/main.cpp

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+#include <vector>
+#include <iostream>
+#include <string>
+using namespace std;
+int main()
+{
+    const size_t SCREEN_WIDTH = 80;
+    const size_t MAX_ASTERISK = SCREEN_WIDTH - 3 - 1;
+    size_t number_count, bin_count, i, j;
+    cerr << "Enter number count: ";
+    cin >> number_count;
+    vector<double> numbers(number_count);
+    cerr << "Enter numbers: ";
+    for (i = 0; i < number_count; i++) cin >> numbers[i];
+    cerr << "Enter bin count: ";
+    cin >> bin_count;
+    vector<size_t> bins(bin_count);
+
+    double min = numbers[0];
+    double max = numbers[0];
+    for (double x : numbers) {
+        if (x < min) {
+            min = x;
+        }
+        else if (x > max) {
+                max = x;
+        }
+    }
+
+    double bin_size = (max - min) / bin_count;
+
+    for (i = 0; i < number_count; i++) {
+            bool found = false;
+            for (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) {
+                bins[bin_count - 1]++;
+            }
+    }
+    double max_count = bins[0];
+    for (double x: bins){
+        if (x > max_count) {
+            max_count = x;
+        }
+    }
+    size_t sum_height = 0;
+    for (i=0; i<bin_count ; i++){
+        double count = bins[i];
+        size_t height = MAX_ASTERISK * (static_cast<double>(count) / max_count);
+        sum_height = sum_height + height;
+    }
+    size_t av_height=sum_height/bin_count;
+
+    for (i=0; i<bin_count; i++){
+        if (bins[i]<100){
+            cout << ' ';
+        }
+        if (bins[i]<10){
+           cout << ' ';
+        }
+        double count = bins[i];
+        size_t height = MAX_ASTERISK * (static_cast<double>(count) / max_count);
+        if (height < av_height){
+           string lineAd (av_height - height , '-');
+           string line (height , '*');
+           cout << bins[i] << "|" << line << lineAd << endl;
+        }
+        if (height > av_height){
+           string lineAd (height - av_height , '+');
+           string line (av_height , '*');
+           cout << bins[i] << "|" << line << lineAd << endl;
+        }
+        if (height == av_height){
+        string line (height , '*');
+        cout << bins[i] << "|" << line << endl;
+        }
+    }
+    return 0;
+}