#include <algorithm>

#include <iostream>

#include <vector>

#include <iterator>

using namespace std;



class Digit2Letter

{

	public:

		char operator() (int i) { return (i%10) + '0' ;	}	// remove all but first digit and convert to letter

};



void main()

{

	int a[] = {0,1,2,3,4,5,6,7,8,9};

	vector<int> vi(&a[0],&a[sizeof(a)/sizeof(int)]);

	vector<char> vc;

	// transform digits to letters using a unary function object of type Digit2Letter

	transform(vi.begin(), vi.end(), inserter(vc, vc.begin()), Digit2Letter());

	// copy to output stream

	copy(vc.begin(), vc.end(), ostream_iterator<char>(cout, " "));

}