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

class announcer {
	int i;
public:
	announcer(int initial_i);
	announcer(const announcer& another);
	~announcer() {cout << "dying holding " << i << "\n";}
	void increment() {++i;}  //inline member function
};

announcer::announcer(int initial_i)
	: i {initial_i}
{
	cout << "born holding " << i << "\n";
}

announcer::announcer(const announcer& another)
	: i {another.i}
{
	cout << "born holding a copy of another object's " << i << "\n";
}

void f(announcer arg1, announcer& arg2, const announcer& arg3); //func declarat

int main()
{
	announcer a1 {10};
	announcer a2 {20};
	announcer a3 {30};

	f(a1, a2, a3);  //Creates a copy of a1, but not of a2 and a3.
	cout << "We have returned from the function f.\n";
	return EXIT_SUCCESS;
}

void f(announcer arg1, announcer& arg2, const announcer& arg3) //func definition
{
	cout << "The function f has been called.\n";
	arg2.increment();   //f can change the value of a2, but not a1 or a3
}