#include <iostream>
#include <cstdlib>

using namespace std;

struct Player {
	int health{};
	int score{};
	int ammo{};
};

void updatePlayer(Player &p)
{
	p.health -= 20;
	p.score += 50;
	p.ammo = 30;
}

int main()
{
	Player p{100, 0, 5};

	cout << "Before update:\n";
	cout << "Health: " << p.health
		<< ", Score: " << p.score
		<< ", Ammo: " << p.ammo << '\n';

	updatePlayer(p);

	cout << "After update:\n";
	cout << "Health: " << p.health
		<< ", Score: " << p.score
		<< ", Ammo: " << p.ammo << '\n';

	return EXIT_SUCCESS;
}