#include <iostream>
#include <cstdlib>
using namespace std;

template <class T>
class wrapper {
	T t;
public:
	wrapper(const T& initial_t = T()): t(initial_t) {}
	friend void outside();
};

void outside()
{
	cout << wrapper<bool>().t << "\n";
	cout << wrapper<int>().t << "\n";
	cout << wrapper<double>().t << "\n";
}

int main()
{
	cout << boolalpha << fixed;
	outside();
	return EXIT_SUCCESS;
}