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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5.  
  6. 	int X,y;
  7. 	cin >> X>>y;
  8. 	int c = 0;
  9. 	for (int i = X;i<=y;i++)
  10. 	{
  11. 		int m = i % 10;
  12. 		if (m == 4|| m==7) {
  13. 			cout << m<<" ";
  14. 			c++;
  15. 		}
  16.  
  17. 	}
  18. 	if (c == 0) { cout << -1; }
  19. 	return 0;
  20. }
Success #stdin #stdout 0.01s 5312KB
comments (?)
stdin 
Standard input is empty
stdout 
-1
https://ideone.com/kjkhwM
language:
C++ (gcc 8.3)
created:
15 days ago
visibility:
public

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