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  1. #include <iostream>
  2.  
  3. struct Outer
  4. {
  5. 	template<typename T>
  6. 	struct Inner
  7. 	{
  8. 		T value ;
  9. 		void print(std::ostream& os) { os << value ; }
  10. 	};
  11.  
  12. 	template <typename T>
  13. 	Outer(T a) { Inner<T> i{a} ; i.print(std::cout); }  
  14. };
  15.  
  16. template<>
  17. struct Outer::Inner<double> 
  18. {
  19. 	double value ;
  20. 	void print(std::ostream& os) { os << 6.66 ; }
  21. } ;
  22.  
  23. int main()
  24. {
  25. 	Outer o1(10) ;
  26. 	std::cout << '\n' ;
  27. 	Outer o2(0.0) ;
  28. 	std::cout << '\n' ;
  29. }
Success #stdin #stdout 0s 3296KB
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stdin
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Standard input is empty
stdout
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10
6.66
https://ideone.com/X5dZvg
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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