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The Fibonacci Series generates the next number by adding two preceding numbers. The Fibonacci sequence begins with two numbers, F0 and F1. F0 and F1 can have initial values of 0 and 1, respectively.

For instance,

The Fibonacci sequence: 0, 1, 1, 2, 3, 5, 8, 13, 21

Program Code:

#include<iostream>    
using namespace std;      

void Fibonacci(int n){    
    static int n1=0, n2=1, n3;    
    if(n>0){    
         n3 = n1 + n2;    
         n1 = n2;    
         n2 = n3;    
         cout<<n3<<" ";    
         Fibonacci(n-1);    
    }    
}    
int main(){    
    int n;    
    cout<<"Enter the number of elements: ";    
    cin>>n;    
    cout<<"Fibonacci Series: ";    
    cout<<"0 "<<"1 ";  
    Fibonacci(n-2);  //n-2 because 2 numbers are already printed    
     return 0;  
}  

Output:

Enter the number of elements: 10
Fibonacci Series: 0 1 1 2 3 5 8 13 21 34 

Note: also read about Convert Decimal to Binary

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