Créer un histogramme à partir des données d'un vector

#include <algorithm>
#include <numeric>
#include <vector>

int  main(){
    std::vector<int>  histogram{ 0, 2 , 17, 21, 99, 92, 80, 61, 60, 59 };
    int  maxi = *std::max_element( histogram.begin(), histogram.end() );
    double  mean =  std::accumulate( histogram.begin(), histogram.end(), 0 )
                  / static_cast<double>(histogram.size());
}

#include <iostream>
#include <vector>
#include <algorithm>

class Histogram {
public:
   Histogram( std::vector<int> v ) : data(std::move(v)) {}
   void  draw(){
      const int  h = *std::max_element( data.begin(), data.end() );
      for ( int i = (h+1)/2 ; i > 0; --i ) {
         for ( auto x : data ) {
            if ( x < 2*i-1 )
               std::cout.put(' ');     // rien
            else if ( x == 2*i-1 )
               std::cout.put( '\xDC');  // demi carré
            else
               std::cout.put( '\xDB' ); // carré plein
         }
         endl( std::cout << ' ' << i*2-1);
      }
      endl(std::cout<<std::string(data.size(),'+'));
   }
private:
   std::vector<int>  data;
};

int main(){
   // jeu de caractere Latin-1 = codepage 850 pour avoir des demi-carrés
   system( "chcp 850");
   std::vector<int>  vect{1,7,0,1,7,10,2,4,0,1,2,3,11,5,6,7,8,9,3,4,0,0,1,6,2,3,4,3,1,7,8,0,8,9};
   Histogram  hist( vect );
   hist.draw();
}