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  1. #include <iostream>
  2. enum COLOR
  3. {
  4.     Blue,
  5.     Red,
  6.     Green,
  7.     Purple,
  8.     Last,
  9.     First=Blue,
  10. };
  11.  
  12. inline COLOR operator++( COLOR& x ) { return x = (COLOR)(std::underlying_type<COLOR>::type(x) + 1); }
  13. COLOR operator*(COLOR c) {return c;} 
  14. COLOR begin(COLOR r) {return First;}
  15. COLOR end(COLOR r)   {return Last;}
  16.  
  17.  
  18. int main() { 
  19.     for(auto c : COLOR()) {
  20.         std::cout << c << '\n';
  21.     }
  22.     return 0;
  23. }
Success #stdin #stdout 0s 2852KB
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https://ideone.com/b7pORw
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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