cs-lab34/main.cpp

#include <iostream>
#include <vector>
#include "histogram.h"

using namespace std;

const size_t SCREEN_WIDTH = 80;
const size_t MAX_ASTERISK = SCREEN_WIDTH - 4;

struct Input {
    vector<double> numbers;
    size_t bin_count{};
};

Input input_data() {

    size_t number_count;
    cerr << "Enter number count: ";
    cin >> number_count;

    Input in;

    cout << "Enter bin count: ";
    cin >> in.bin_count;

    in.numbers.resize(number_count);

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

void show_histogram_text(const vector<size_t> &bins){
    size_t maxbin = bins[0];
    for (size_t i=1; i < bins.size(); i++){
        if (maxbin < bins[i]){
            maxbin = bins[i];
        }
    }

    if (maxbin <= MAX_ASTERISK){
        for (size_t i = 0; i < bins.size(); i++) {
            cout.width(4);
            cout << bins[i] << "|";
            for (size_t j = 0; j < bins[i]; j++) {
                cout << "*";
            }
            cout << endl;
        }
    } else {
        for (size_t i = 0; i < bins.size(); i++) {
            cout.width(4);
            cout << bins[i] << "|";
            size_t height = static_cast<size_t>(MAX_ASTERISK * (static_cast<double>(bins[i]) / maxbin));
            for (size_t j = 0; j < height; j++) {
                cout << "*";
            }
            cout << endl;
        }
    }
}
int main(){
    Input in = input_data();

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

    show_histogram_text(bins);
}