34destructors.cpp

#include <iostream>
using namespace std;

// Destructors never takes any argument or returns any value
// It is used to clear storage from dynamically allocated objects

static int count = 0;
class num
{
public:
    num()
    {
        count++;
        cout << "The number of object that called the constructor is = " << count << endl;
    }
    ~num() // this is a destructor that uses tilda ~ before a constructor like setup except arguments
    {
        cout << "The number of object that called the destructor is = " << count << endl;
        count--;
    }
};
int main()
{
    // this is a representation of constructor call and destructor call
    cout << "Entering the main function" << endl;
    cout << "Creating an object " << endl;

    num n1;
    {
        cout << "Entering a block" << endl;
        cout << "Creating 2 more block objects" << endl;
        num n2, n3;
        cout << "Exiting the block" << endl;
    }
    cout << "Exiting the main function" << endl;
    return 0;
}