fork download
copy 
  1. #include <iostream>
  2. using namespace std;
  3. double n;
  4. int check(int x){
  5. 	for(int i = 2; i * i <= x; i++){
  6. 		if(x % i == 0){
  7. 			return 0;
  8. 		}
  9. 	}	
  10. 	return 1;
  11. }
  12. int main() {
  13. 	cin >> n;
  14. 	for(int i =n - 1; i >= 1; i--){
  15. 		if(check(i) == 1){
  16. 			cout << i << endl;
  17. 			//return 0;
  18. 		}
  19. 	}
  20. 	cout << n;
  21. 	return 0;
  22. }
Success #stdin #stdout 0s 3472KB
comments (?)
stdin
copy 
50
stdout
copy 
47
43
41
37
31
29
23
19
17
13
11
7
5
3
2
1
50
https://ideone.com/5WIJSN
language:
C++ (gcc 8.3)
created:
7 years 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!