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  1. #include <iostream>
  2.  
  3. enum class NumericType
  4. {
  5.     None                    = 0,
  6.     PadWithZero             = 0x01,
  7.     NegativeSign            = 0x02,
  8.     PositiveSign            = 0x04,
  9.     SpacePrefix             = 0x08
  10. };
  11.  
  12. NumericType operator |= (NumericType &a, NumericType b) {
  13.     unsigned ai = static_cast<unsigned>(a);
  14.     unsigned bi = static_cast<unsigned>(b);
  15.     ai |= bi;
  16.     return a = static_cast<NumericType>(ai);
  17. }
  18.  
  19. std::ostream & operator << (std::ostream &os, NumericType x) {
  20.     return os << static_cast<unsigned>(x);
  21. }
  22.  
  23. int main ()
  24. {
  25.     NumericType a = NumericType::PadWithZero;
  26.     NumericType b = NumericType::SpacePrefix;
  27.     a |= b;
  28.     std::cout
  29.         << std::hex
  30.         << "a: " << a << std::endl
  31.         << "b: " << b << std::endl;
  32. }
Success #stdin #stdout 0s 2896KB
comments (?)
stdin
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Standard input is empty
stdout
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a: 9
b: 8
https://ideone.com/LmfzjP
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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