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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. class A {
  5. public:
  6.     operator bool() {
  7.     	cout << "bool\n";
  8.         return true;
  9.     }
  10.  
  11.     bool operator!() {
  12.     	cout << "not\n";
  13.         return false;
  14.     }
  15. };
  16.  
  17. int main() {
  18.     A a;
  19.  
  20.     if (!a) {
  21.         std::cout << "HELLO";
  22.     } else {
  23.         std::cout << "WORLD";
  24.     }
  25.     std::cout << std::endl;
  26.  
  27.     return 0;
  28. }
Success #stdin #stdout 0s 16064KB
comments (?)
stdin
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Standard input is empty
stdout
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not
WORLD
https://ideone.com/sW8yEm
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
secret

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