Write A C++ Program To Depict Use Of New & Delete Operators.

#include<iostream.h> 
 #include<conio.h> 
 class rec 
 { 
      private: 
                   int I; 
                   int b; 
      public: 
                   rec() 
               { 
                       cout<<"Constructor with no parameter invoked "<<endl; 
                } 
                  void read() 
               { 
                  cout<<"Enter length & breadth : "; 
                  cin>>I>>b; 
               } 
                 void area() 
               { 
                 cout<<"Area is "<<I*b <<endl; 
               } 
                ~rec() 
              { 
                 cout<<"Destructor invoked"<<endl; 
               } 
 }; 
         void main() 
      { 
             clrscr(); 
             rec *p; 
             p = new rec; 
             p->read(); 
             p->area(); 
             cout<<"Destroying object\n"; 
             delete p; 
             cout<<"End of program"; 
             getch(); 
      }