C++ Programming Code Examples
C++ > Recursion Code Examples
Program to Find Fibonacci Numbers using Recursion
/* Program to Find Fibonacci Numbers using Recursion
This C++ Program demonstrates the the computation of Fibonacci Numbers using Recursion. */
#include <cstring>
#include <iostream>
#include <cstdlib>
#define ll long long
using namespace std;
/* Recursive function to find Fibonnaci Numbers */
ll fibo_recur(int n)
{
if (n == 1 || n == 2)
return 1;
else
return fibo_recur(n - 1) + fibo_recur(n - 2);;
}
/* Main */
int main()
{
int n;
while (1)
{
cout<<"Enter the integer n to find nth fibonnaci no.(0 to exit): ";
cin>>n;
if (n == 0)
break;
cout<<fibo_recur(n)<<endl;
}
return 0;
}
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