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  1. #include <iostream>
  2. #include <string>
  3.  
  4. int main()
  5. {
  6.     {
  7.         std::string (&plus)(std::string const&, std::string const&) = &std::operator+;
  8.         std::string a ("Hello, "), b("World!");
  9.         std::cout << plus(a, b) << std::endl;
  10.     }
  11.  
  12.     {
  13.         int (&plus)(int const&, int const&) = &operator+;
  14.         int a (3), b(4);
  15.         std::cout << plus(a, b) << std::endl;
  16.     } 
  17. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
prog.cpp: In function ‘int main()’:
prog.cpp:13:56: error: ‘operator+’ not defined
stdout 
Standard output is empty
https://ideone.com/vAWef8
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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