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  1. #include <iostream>
  2.  
  3. int main()
  4. {
  5.     int i = 0;
  6.     int& ref = i;
  7.  
  8.     auto f1 = [ref]() mutable { ++ref; };
  9.     auto f2 = [&ref](){ ++ref; };
  10.  
  11.     f1();
  12.     f2();
  13.     std::cout << i;
  14. }
  15.  
Success #stdin #stdout 0s 2928KB
comments (?)
stdin 
Standard input is empty
stdout 
1
https://ideone.com/iXSk7
language:
C++14 (gcc 8.3)
created:
13 years ago
visibility:
public

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