c++ program to demonstrate the use of dynamic constructor

Here is an simple example to demonstrate the use of dynamic constructor:

#include <iostream.h>

#include <conio.h>

class dyncons

{

 int * p;

 public:

 dyncons()

 {

  p=new int;

  *p=10;

 }

 dyncons(int v)

 {

  p=new int;

  *p=v;

 }

 int dis()

 { return(*p);

 }

};

void main()

{

clrscr();

dyncons o, o1(9);

cout<<"The value of object o's p is:";

cout<<o.dis();

cout<<"\nThe value of object 01's p is:"<<o1.dis();

getch();

}

 Output of above program :