#include <iostream>
using namespace std;
 
class Foo;
class Bar;
class Hoge;
 
class Foo
{
public:
	void func() { cout << "func!" << endl; }
	Foo(int v) { cout << v << endl; }
	Foo() {}
};
 
class Bar : public Foo
{
public:
	Bar() {}
	Bar(int v) : Foo(v) {}
};
 
class Hoge
{
public:
	void func() { cout << "Hoge!" << endl; }
};
 
template <class T>
void call_func(T& t) {
	t.func();
}
 
int main() {
	Foo foo;
	Bar bar;
	Hoge hoge;
 
	foo.func();
	bar.func();
	hoge.func();
 
	call_func(foo);
	call_func(bar);
	call_func(hoge);
 
	return 0;
}

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