C++ Destructor Basics

1. Destructors are special member functions of the class required to free the memory of the object whenever it goes out of scope.
2. Destructors are parameterless functions.
3. Name of the Destructor should be exactly same as that of name of the class. But preceded by ‘~’ (tilde).
4. Destructors does not have any return type. Not even void.
5. The Destructor of class is automatically called when object goes out of scope.

C++ Destructor programs

C++ Destructor Program #1 : Simple Example

#include<iostream> 
using namespace std;
 
class Marks
{
public:
   int maths;
   int science;
   
   //constructor
   Marks() {
      cout << "Inside Constructor"<<endl;
      cout << "C++ Object created"<<endl;
   }
 
   //Destructor
   ~Marks() {
      cout << "Inside Destructor"<<endl;
      cout << "C++ Object destructed"<<endl;
   }
};

int main( )
{
   Marks m1;
   Marks m2;
   return 0;
}

Inside Constructor
C++ Object created
Inside Constructor
C++ Object created

Inside Destructor
C++ Object destructed
Inside Destructor
C++ Object destructed

~Marks() {
   cout << "Inside Destructor"<<endl;
   cout << "C++ Object destructed"<<endl;
}