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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. enum Color {red, blue};
  5. enum Number {three=3, four};
  6. enum Shape {circle, square};
  7.  
  8. struct article 
  9. {
  10.     enum Color color;
  11.     enum Number number;
  12.     enum Shape shape;
  13. } article_1;
  14.  
  15. //assume I have the below for all three enums
  16. std::istream& operator>>( std::istream& is, Color& I ) 
  17. {
  18.     std::string tmp;
  19.     if ( is >> tmp ) {
  20.     	for (auto&c:tmp)
  21.         	c=tolower(c);  
  22. 		if (tmp=="red") I = red; 
  23. 		else if (tmp=="blue") I = blue;   
  24.     }
  25.     return is ;
  26. }
  27. std::ostream& operator<<( std::ostream& os, Color& O ) 
  28. {
  29. 	std::string tmp; 
  30. 	switch (O) {
  31. 		case red:  tmp="red"; break; 
  32. 		case blue: tmp="blue"; break; 
  33. 		default:   tmp="oops!!";
  34. 	}
  35.     return os<<tmp ;
  36. }
  37.  
  38.  
  39. int main ()
  40. {
  41.     cout<<"Enter the Color : ";
  42.     cin>>article_1.color;
  43. 	cout << "Result: "<<article_1.color<<endl; 
  44.  
  45. 	// -------------------------- Comparison
  46. 	if (article_1.color==red)
  47. 	    cout<<"Bingo!"<<endl; 
  48. 	if  (article_1.color!=blue)
  49. 	    cout<<"Bingo again!"<<endl; 
  50. 	if  (article_1.color!=Color::blue)
  51. 	    cout<<"Yet another Bingo!"<<endl; 
  52.  
  53.  
  54.      return 0;
  55. }
Success #stdin #stdout 0s 4372KB
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stdin
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Standard input is empty
stdout
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Enter the Color : Result: red
Bingo!
Bingo again!
Yet another Bingo!
https://ideone.com/gDx1uI
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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