Simple C++ program to calculate n-th element of Fibonacci sequence.

// © 2017 TheFlyingKeyboard and released under MIT License
// theflyingkeyboard.net

#include <iostream>

using namespace std;

int fibonacci(int n);

int main(){
    int n; 	
    
    cout << "Enter a number: ";
    cin >> n;	
    
    cout << "Fibonacci of: " << n << " is equal to: " << fibonacci(n);
  
  return 0;
}

int fibonacci(int n) {
    int fib = 0;
    int fibPrev1 = 1;
    int fibPrev2 = 0;
    
    for(int i = 2; i <= n; i++){
      fib = fibPrev1 + fibPrev2;
      fibPrev2 = fibPrev1;
      fibPrev1 = fib;
    }
    
    return fib;
}

 



C++ Fibonacci
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