/*
 * Copyright (c) JoinQuant Development Team
 * Author: Huayong Kuang <kuanghuayong@joinquant.com>
 */

#include <iostream>
#include <iterator>
#include <vector>
#include <sstream>

using namespace std;

string join(const vector<string>& vec, const char* delim)
{
 ostringstream res;
 copy(vec.begin(), vec.end(), ostream_iterator<string>(res, delim));
 return res.str();
}

int main(void)
{
 vector<string> v_str;
 v_str.push_back("hello");
 v_str.push_back("world");
 v_str.push_back("!");

 string ret = join(v_str, "|");
 cout << ret << endl;

 return 0;
}