#ifndef HISTOGRAM_H_INCLUDED #define HISTOGRAM_H_INCLUDED #include <iostream> #include <vector> #include <math.h> std::vector<size_t> make_histogram(const std::vector<double>& numbers, size_t& bin_count); void show_histogram_text(const std::vector<size_t> bins, size_t bin_count); #endif // HISTOGRAM_H_INCLUDED