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  1. #include <iostream>
  2. #include <string>
  3.  
  4. auto string_size(const std::string& s) -> decltype(auto) {
  5.     return s.size();
  6. }
  7.  
  8. int main() {
  9.     const std::string s("ker");
  10.     std::string::size_type (*fp)(const std::string&) = &string_size;
  11.     std::cout << fp(s) << std::endl;
  12.  
  13.     return 0;
  14. }
Success #stdin #stdout 0s 3272KB
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stdin 
Standard input is empty
stdout 
3
https://ideone.com/q5k9gX
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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