Destructor
It is a special member function, which contains ~ (tilde) symbol, which is used to deallocate the resource of the object.
Like constructors, we can not call the destructors, it is called automatically just before object is lost.
Rules for the Destructors:
It is a special member function, which contains ~ (tilde) symbol, which is used to deallocate the resource of the object.
Like constructors, we can not call the destructors, it is called automatically just before object is lost.
A destructor as the as the name
implies is used to destroy the objects that have been created by a constructor.
1. Like
a constructor, the destructor is a member function whose name is the same as
the class name but it is preceeded by a tilde.
Tilde representation is” ~”Rules for the Destructors:
1. Destructor cannot be overloaded.
2. Destructor
do not require any arguments, not even the return type.
3. Desturctors are the only way to destroy objects.
4. Whenever
the program is terminated by either return or exit statements, the destructor
is executed.
5. It
does not take parameters.
6. It
is a good practice to declare destructors in a program since it releases memory
space for future use.
7. We
use destructor to clean up storage that is no longer accessible.
Example 1:
#include<iostream.h>
class Example
{
private:
int data;
public:
Example() //constructor(same name as class)
{
cout<<”inside the constructor”;
}
~Example() //destructor(same name as class name but
preceded by tilde symbol)
{
cout<<”inside the destructor”;
}
};
void main()
{
Example e;
}
Example 2:
#include<iostream.h>
class A
{
public:
~A()
{
Cout<<”I
am constructor A;
}
};
class B:public A
{
Public:
~B()
{
cout<<”I
am destructor B;
}
};
void main()
{
B,B1;
}
OUTPUT:
I am constructor A
I am constructor B
I am destructor B
I am destructor A 
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