Dynamic Constructor

Dynamic Constructor

• The Dynamic Constructor can use to allocate memory while creating objects.
• The Dynamic Constructor will enable the system to allocate the right amount of the memory for each object when objects are not of the same size.
• Thus resulting in the saving of memory.
• Allocation of the memory to objects at the time of their construction is known as dynamic construction of objects. 

Let's understand by example:

CODE:

#include <iostream>

using namespace std;

class dyncons

{

 int * p;

 public:

 dyncons()

 {

  p=new int;

  *p=10;

 }

 dyncons(int v)

 {

  p=new int;

  *p=v;

 }

 int dis()

 { return(*p);

 }

};

int main()

{

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();

}

OUTPUT: