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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int count, n = 13;
  6. 	//cout << "Nhập n: " << endl;
  7.  
  8. 	//cin >> n;
  9. 	for(int i = 1; i <= n; i++)
  10. 	{
  11. 		if(n % i == 0)
  12. 		{
  13. 			count++;
  14. 		}
  15. 		else
  16. 			continue;
  17. 	}
  18. 	if(count == 2)
  19. 		cout << n << " là số nguyên tố." << endl;
  20. 	else
  21. 		cout << n << " không là số nguyên tố." << endl;
  22.  
  23. }
Success #stdin #stdout 0s 3344KB
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https://ideone.com/Wrm5sW
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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