fork download
copy 
  1. #include <bits/stdc++.h>
  2.  
  3. using namespace std;
  4.  
  5. int f(int n){
  6.  
  7.   if(n > 1){
  8.     return f(n-1) + f(n-2);
  9.   }
  10.   if(n == 1){
  11.     return 1;
  12.   }
  13.   if(n == 0){
  14.     return 1;
  15.   }
  16.  
  17. }
  18.  
  19. int main(){
  20.  
  21.   int n;
  22.   cin >> n;
  23.  
  24.   cout << f(n) << "\n";
  25. }
Success #stdin #stdout 0s 5280KB
comments (?)
stdin
copy 
4
stdout
copy 
5
https://ideone.com/USYsL1
language:
C++ (gcc 8.3)
created:
281 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!