#include <iostream>
using namespace std;

class Cow
{
public:
	int id;

	Cow()
	{
		id = 0;
	}
	
	void setId(int id)
	{
		this->id = id;
	}
};

void change(int i, Cow cow)
{
	cow.setId(i);
}

int main() {
	Cow* hemda = new Cow();
	
	change(70, *cow);
	
	cout << hemda->id;
	
	delete hemda;	
}