static variable in c++
/*
this example show where and how
static variables are used
*/
#include <iostream>
#include <string>
//doing "using namespace std" is generally a bad practice, this is an exception
using namespace std;
class Player
{
int health = 200;
string name = "Name";
//static keyword
static int count = 0;
public:
//constructor
Player(string set_name)
:name{set_name}
{
count++;
}
//destructor
~Player()
{
count--;
}
int how_many_player_are_there()
{
return count;
}
};
int main()
{
Player* a = new Player("some name");
cout << "Player count: " << *a.how_many_player_are_there() << std::endl;
Player* b = new Player("some name");
cout << "Player count: " << *a.how_many_player_are_there() << std::endl;
delete a;
cout << "Player count: " << *b.how_many_player_are_there() << std::endl;
}
/*output:
1
2
1
*/