Amigo Invisible

AmigoInvisible.cpp

/**
 *	Usage: Input a name per line (press enter after input name). When finished inputed names, enter an empty line.
 *
 */

#include <vector>
#include <iostream>
#include <string>
#include <algorithm>
#include <random>
#include <chrono>
#include <limits>

using namespace std;

void clear()
{
	system("cls");
}

int main()
{
	unsigned seed = chrono::system_clock::now().time_since_epoch().count();

	string line;
	vector<string> names;

	while(getline(cin, line) && line != "")
	{
		names.push_back(line);
	}

	cout << "Participantes: " << endl;
	for(unsigned int i = 0; i < names.size(); i++)
	{
		cout << i + 1 << ") " << names[i] << endl;
	}

	vector<string> shuffled = names;
	shuffle(shuffled.begin(), shuffled.end(), default_random_engine(seed));

	/*
	cout << endl << "Shuffled: " << endl;

	for(unsigned int i = 0; i < shuffled.size(); i++)
	{
		cout << i + 1 << ") " << shuffled[i] << endl;
	}
	*/

	cin.ignore(numeric_limits<int>::max(), '\n');
	cout << endl << "Regalos: " << endl;
	for(unsigned int i = 0; i < names.size(); i++)
	{
		auto pos = find(shuffled.begin(), shuffled.end(), names[i]);
		unsigned int index = pos - shuffled.begin();
		unsigned int nxt = (index + 1) % shuffled.size();
	
		clear();
		cout << names[i] << ", pulsa una tecla. " << endl;
		cin.get();
		cout << names[i] << ", regalas a " << shuffled[nxt] << "." << endl;
		cin.get();
		clear();
	}

	return 0;
}