ex10_31.cpp

//
//  ex10_31.cpp
//  Exercise 10.31
//
//  Created by pezy on 12/13/14.
//  Copyright (c) 2014 pezy. All rights reserved.
//
//  Update the program from the previous exercise so that it prints only the
//  unique elements.
//  Your program should use unqiue_copy

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

int main()
{
    std::istream_iterator<int> in_iter(std::cin), eof;
    std::vector<int> vec;
    while (in_iter != eof) vec.push_back(*in_iter++);
    std::sort(vec.begin(), vec.end());
    std::unique_copy(vec.cbegin(), vec.cend(),
                     std::ostream_iterator<int>(std::cout, " "));
}