how to count the number of objects created in c++

Question

how to count the number of objects created in c++

pls explain with a simple example

Answer 1

Number of objects for what? If you want to count the number of objects of a specific class, you can use a static counter. Something like below.. Increment counter on creation and decrement while destruction..

class A
{
  public:
    static int counter;
    A()
    {
      counter ++;
    }
    virtual ~A()
    {
      counter --;
    }
};

int A :: counter = 0;