fork download
copy 
  1. #include <iostream>
  2. #include <cctype>
  3.  
  4.  
  5. bool is_hex(const std::string& s){
  6. 	std::string::const_iterator i;
  7. 	for(i = s.begin(); i != s.end(); ++i){
  8. 		if(! std::isxdigit(*i))
  9. 			return false;
  10. 	}
  11. 	return true;
  12. }
  13.  
  14.  
  15. int main(void){
  16. 	std::string s = "ABCDEF";
  17.  
  18. 	if(is_hex(s))
  19. 		std::cout << "yes hex.";
  20. 	return 0;
  21. }
Success #stdin #stdout 0s 3272KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
yes hex.
https://ideone.com/EMzO0T
language:
C++ (gcc 8.3)
created:
10 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!