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  1. #include <iostream>
  2. #include <algorithm>
  3. #include <ctype.h>
  4. using namespace std;
  5.  
  6. string lower_case(string& x)
  7. {
  8.     std::transform(x.begin(), x.end(), x.begin(), ::tolower);
  9.  
  10.     return x;
  11. }
  12.  
  13. int main()
  14. {
  15.  string str = "HELLO WORLD";
  16.  lower_case(str);
  17.  
  18.  cout << str;
  19.  
  20.  return 0;
  21. }
  22.  
  23.  
Success #stdin #stdout 0s 3472KB
comments (?)
stdin 
Standard input is empty
stdout 
hello world
https://ideone.com/u5WcYA
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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