fork(1) download
copy 
  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int n;
  6. 	cin >> n;
  7.     cout <<n*(n+1)/2<<endl;
  8. 	return 0;
  9. }
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin
copy 
5
stdout
copy 
15
https://ideone.com/0pDhbx
language:
C++ (gcc 8.3)
created:
4 hours 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!