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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	// your code goes here
  6.  
  7. 	int n;
  8. 	cin>>n;
  9.  
  10. 	int cnt = 0;
  11.  
  12. 	for(int i=1; i*i<=n; i++){
  13. 		if(n%i == 0){
  14. 			cnt++;
  15.  
  16. 			if(i != n/i){
  17. 				cnt++;
  18. 			}
  19. 		}
  20. 	}
  21.  
  22. 	if(cnt == 2){
  23. 		cout<<"prime"<<endl;
  24. 	}else{
  25. 		cout<<"Not a prime number"<<endl;
  26. 	}
  27.  
  28. 	return 0;
  29. }
Success #stdin #stdout 0.01s 5296KB
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Not a prime number
https://ideone.com/HoQEDx
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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