12-D Prog:06 Write a program to print the Fibonacci series using Copy constructor.

A program to generate a series of Fibonacci numbers using a copy constructor where the copy constructor is defined within the class declaration itself.

#include<iostream.h>
#include<conio.h>

class fibonacci
{
private:
unsigned long int f0,f1,fib;



public:
fibonacci()
{
f0=0;
f1=1;
fib=f0+f1;
}

fibonacci (fibonacci &ptr)
{
f0=ptr.f0;
f1=ptr.f1;
fib=ptr.fib;
}

void increment()
{
f0=f1;
f1=fib;
fib=f0+f1;
}

void display()
{
cout << fib <<"\t";
}

}; //end of class construction


void main()
{

clrscr();

fibonacci number;
for (int i=1; i<=5;i++)
{
number.display();
number.increment();
}

}

copy constructor video: 5 minutes
https://www.youtube.com/watch?v=2LxU7vroRj0

https://www.youtube.com/watch?v=6ldGLSqQCTo