cs-lab34/main.cpp

#include <vector>
#include <math.h>
#include <iostream>
#include <conio.h>
#include <fstream>
using namespace std;

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(){
    cerr << "Input numbers count: ";
    size_t number_count;
    cin >> number_count;
    Input in;
    in.numbers.resize(number_count);
    cerr << "Input numbers: ";
    for (size_t i = 0; i < number_count; i++)
        {
        cin >> in.numbers[i];
        }
    cerr << "Input bin count: ";
    cin >> in.bin_count;
    return in;
}

void
find_minmax(vector<double> numbers, double &min, double &max)
{
    min = numbers[0];
	max = numbers[0];
	for (size_t i = 1; i < numbers.size(); i++)
        {
		if (min > numbers[i])
			min = numbers[i];
		if (max < numbers[i])
			max = numbers[i];
        }
        return;
}

vector <size_t> make_histogramm(vector<double>numbers, size_t bin_count)
{
    double min, max;
    find_minmax(numbers, min, max);
    double binSize = (max - min) / bin_count;
    vector<size_t> bins(bin_count);
	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 = min + j * binSize;
			auto hi = min + (j + 1) * binSize;
			if ((lo <= numbers[i]) && (numbers[i] < hi))
			{
				bins[j]++;
				found = true;
			}
		}
		if (!found)
			bins[bin_count - 1]++;
	}
	size_t max_count = bins[0];
	for (size_t i = 0; i < bin_count; i++)
	{
		if (max_count < bins[i])
			max_count = bins[i];
	}
	if (max_count > 76) {
        for (size_t i = 0; i < bin_count; i++) {
            int count = bins[i];
            size_t height = 76 * (static_cast<double>(count) / max_count);
            bins[i] = height;
        }
    }
    return bins;
}


void show_histogramm(vector<size_t>bins)
{
    for (size_t i = 0; i < bins.size(); i++)
        {
        cout << bins[i] << "|";
        for (size_t j = 0; j < bins[i]; j++)
            cout << "*";
        cout << endl;
        }
    return;
}









int main()
{
    /*bool running;
	int res;
	running =true;
	res = 0;*/
	Input in = input_data();

	auto bins = make_histogramm(in.numbers, in.bin_count);

	show_histogramm(bins);

	return 0;
}