Question

How to count instances of an object in C++

Answer 1

#include <iostream>

using std::cout;
using std::endl;

#define TOTAL 3

class Test {
public:
	static int sCounter;
	Test() { sCounter++; };
	~Test() { sCounter--; };
};

int Test::sCounter = 0;

int main() 
{
	Test o;
	Test b[TOTAL];
	Test *p = new Test;

	cout << o.sCounter << endl;
	
	delete p;

	cout << Test::sCounter << endl;

	return 0;
}


/*
run:

5
4

*/

 

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