fork download
copy 
  1. #include <iostream>
  2. using namespace std;
  3.  
  4. using ll = long long;
  5.  
  6. ll S(int n) {
  7. 	return n < 2 ? 1 : S(n - 1) + n;
  8. }
  9.  
  10. int main() {
  11. 	// your code goes here
  12. 	int n;
  13. 	scanf("%d", &n);
  14. 	printf("S(%d) = %d", n, S(n));
  15. 	return 0;
  16. }
Success #stdin #stdout 0s 5308KB
comments (?)
stdin
copy 
10
stdout
copy 
S(10) = 55
https://ideone.com/ay60c5
language:
C++14 (gcc 8.3)
created:
3 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!