// Random numbers
// g++ generate_copies.cpp
#include <iostream>
#include <fstream>
#include <iomanip>
#include <algorithm>


using namespace std;

void format_output(std::ostream& out, unsigned decimals){
  out << std::fixed<<std::setprecision(decimals);
}

class MyRandom{
public:
  // MyRandom(void) {cout<<"making a generator\n";}
  //~MyRandom() {cout<<"deleting a generator\n";}
  double operator()() {
    // poor random numbers 0...1
    static int i=0;
    ++ i;
    cout<<" i = "<<i<<endl;
    return rand()*1.0/RAND_MAX; // avoid int/int !
  }
  double double_random() {
    // poor random numbers 0...1
    static int j=0;
    if(j==0) {cout<<j<<" init \n"; srand(1234);}
    cout<<j<<endl;
    ++j;
    return rand()*1.0/RAND_MAX; // avoid int/int !
  }
};




int main(){
  format_output(cout, 30);
  srand(1234);
  MyRandom gene;
  MyRandom gene2; 
  cout<<gene()<<endl;
  cout<<gene2()<<endl;
  cout<<gene()<<endl;
  cout<<gene2()<<endl;

  cout<<endl;
  cout<<"gene\n";
  cout<<gene.double_random()<<endl;
  cout<<gene.double_random()<<endl;

  cout<<"gene2\n";
  cout<<gene2.double_random()<<endl;
  cout<<gene2.double_random()<<endl;
 
  return 0;
}