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  1. #include <iostream>
  2. #include <string>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	int a; 
  7. 	const basic_string<int> allowed{3,5,9};
  8. 	while (  (cin>>a) && allowed.find(a)== string::npos)
  9. 	   cout << "Incorect input, try again ! ";
  10. 	if (cin.eof())
  11. 	   cout <<"EOF !!"<<endl; 
  12. 	else if (!cin)
  13. 	   cout << "invalid input or input failure"<<endl; 
  14. 	else cout << "Success: "<<a<<endl; 
  15. 	return 0;
  16. }
Success #stdin #stdout 0s 3416KB
comments (?)
stdin 
99 100 30 5
stdout 
Incorect input, try again ! Incorect input, try again ! Incorect input, try again ! Success: 5
https://ideone.com/oM9kmv
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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