Destructors

Destructors

• Destructor is to destroy the objects that have been created by the constructors.
• Like the constructor Destructor is also a member function of the class with same name of class.
• But it preceded by tilde sign(~). 
• Destructor never takes any argument. 
• Destructor never  return any value.
• It will invoke implicitly.

Let's take an example:
CODE:

#include<iostream>

using namespace std;

class NumberInitialization

{

int x,y;

public:

NumberInitialization(); //constructor

~NumberInitialization(); //destructor

};

NumberInitialization::NumberInitialization()

{

 cout<<"default constructor calling"<<endl;

 x=1;

 y=2;

 cout<<"x="<<x<<endl;

 cout<<"y="<<y<<endl;

}

 NumberInitialization::~NumberInitialization()

 {

 cout<<"Destructor calling"<<endl;

 x=0;

 y=0;

 cout<<"x="<<x<<endl;

 cout<<"y="<<y<<endl;

 }

 int main()

 {

 NumberInitialization n1;

 cout<<"Program over\n";

 return 0;

 }

OUTPUT: