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  1. #include <iostream>
  2.  
  3. template <class IType> class BitArray;
  4. template <class IType> std::ostream& operator<<(std::ostream&, const BitArray<IType>&);
  5. template <class IType> std::istream& operator>>(std::istream&, BitArray<IType>&);
  6.  
  7.  
  8. template < class IType = unsigned int >
  9. class BitArray {
  10.     friend std::ostream& operator<< <>(std::ostream&, const BitArray&);
  11.     friend std::istream& operator>> <>(std::istream&, BitArray&);
  12. private:
  13.     IType value = {};
  14. };
  15.  
  16. template <class IType>
  17. std::ostream& operator<<(std::ostream& os, const BitArray<IType>& b)
  18. {
  19.     return os << b.value;
  20. }
  21.  
  22. template <class IType>
  23. std::istream& operator>>(std::istream& os, BitArray<IType>& b)
  24. {
  25.     return os >> b.value;
  26. }
  27.  
  28. int main()
  29. {
  30.     BitArray<int> b;
  31.     std::cin >> b;
  32.     std::cout << b << std::endl;
  33.     return 0;
  34. }
  35.  
Success #stdin #stdout 0s 3300KB
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https://ideone.com/8CBiLs
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
secret

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