Basic use of destructor

[Sacchidananda]

Hi friends,

I am aware about the basic use of constructors. But I don't know about the destructror.

What is the use of destructor ?Is use of destructor is similar to the constructor?

Please give me solution over this confusion....

[MindSpace]

Below are some information which I know regarding destructor

1. A the use of destructor is exactly opposite to constructor.

2. The destructor is used to release the constructors.

3. A destructor is a method of a class which executed when the class is deleted.

4. In other word It performs cleanup of the members of the class which need cleanup process ,

e.g Deallocation of objects referred to pointer within the class.

[Modifier]

Please go through the following example which shows the use of the destructor :

Program code:

#include <iostream>
using namespace std;

class myclass {
int a;
public:
myclass(); // constructor
~myclass(); // destructor
void show();
};

myclass::myclass()
{
cout << "In constructor\n";
a = 10;
}
myclass::~myclass()
{
cout << "Destructing...\n";
}

void myclass::show()
{
cout << a << endl;
}

int main()
{
myclass ob;

ob.show();

return 0;
}

Hope, it will help you

[Praetor]

Destructors is basically used to deallocate memory allocated by constructor. And also to do other cleanup for a class object and members when the object is deleted.
Destructor is called when the object of class passes out of scope OR deleted.

Destructor is a member function which has similar name as its class prefixed by a '~' .

e.g:

class A {
public:

A();
// Constructor for class A

~A();
// Destructor for class A

};