Write a program that enters and integer form the user and displays the Fibonacci numbers.

#include<iostream.h>
#include<conio.h>
void fibonacci(int n);
void main()
{
       int num;
       clrscr();
       cout<<"Enter number upto which fibonacci numbers are required: ";
       cin>>num;
       cout<<"Fibonacci  numbers upto "<<num<<" are: "<<endl;
       fibonacci(num);
       getch();
}
void fibonacci(int n)
{
       int a , b, next;
       a = 0;
       b = 1;
       cout<<a<<" "<<b;
       next = a+b;
       while(next <= n)
       {
              cout<<" "<<next;
              a = b ;
              b = next;
              next = a+b;
       }
}