//test some algorithms using function objects (gen and odd).
#include <iostream>
#include <algorithm>
#include <iterator>
#include <vector>

using namespace std;

class Generator{
 private:
   int i;
 public:
   Generator (){i =0;}//constructor
   int operator() () { return ++i; }
   int get()const{return i;}
   void set(int i0 = 0){i=i0;}
} ;

class Modulus{
private:
  int modulus;
  Modulus():modulus(2){}
public:
  Modulus(int m):modulus(m){}
  bool operator() (int i){ return i%modulus;}
} ;

void print(vector<int> v)
{
	copy(v.begin(), v.end(), ostream_iterator<int>(cout, "\t"));
        cout << endl;
}

int main()
{
	Generator gen;
	Modulus odd(2);
	vector <int> v(10);

	fill(v.begin(), v.end(), 26);

	print(v);

	generate(v.begin(), v.end(), gen);

	print(v);

	cout << gen.get() <<endl;

	generate(v.begin(), v.end(), gen);

	print(v);

	cout << gen.get() <<endl;


	vector<int>result(10);

	replace_copy_if(v.begin(), v.end(), result.begin(), odd, 42);

	print(v);

	print(result);

}