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  1. #include <iostream>
  2. #include <string>
  3.  
  4. int main() {
  5. 	std::string const UPPER = "HELLO, WORLD!";
  6. 	std::cout << "UPPER: " << UPPER << "\n";
  7.  
  8. 	std::string lower = UPPER;
  9. 	for (char* begin = const_cast<char*>(lower.data()),
  10. 	         * end = begin + lower.size();
  11.          begin != end;
  12.          ++begin)
  13. 	{
  14. 		*begin = std::tolower(*begin);
  15. 	}
  16. 	std::cout << "lower: " << lower << "\n";
  17. 	std::cout << "UPPER: " << UPPER << "\n";
  18. 	return 0;
  19. }
Success #stdin #stdout 0s 3428KB
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stdin
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Standard input is empty
stdout
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UPPER: HELLO, WORLD!
lower: hello, world!
UPPER: hello, world!
https://ideone.com/pcgvRM
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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