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  1. #include <iostream>
  2. #include <stdexcept>
  3. using namespace std;
  4.  
  5. class Farm
  6. {
  7. public:
  8.     int cows = 1;
  9.     int chickens = 2;
  10.     int mules = 3;
  11. };
  12.  
  13. int Farm::* getMemberPtr(int whichMember)
  14. {
  15.     switch (whichMember)
  16.     {
  17.         case 0: return &Farm::chickens;
  18.         case 1: return &Farm::cows;
  19.         case 2: return &Farm::mules;
  20.     }
  21. 	throw invalid_argument("");
  22. }
  23.  
  24. void count_animals(int Farm::*member)
  25. {
  26.     Farm animal_farm;
  27.     cout << animal_farm.*member;
  28. }
  29.  
  30. int main()
  31. {
  32. 	int animals_to_count = 0;
  33. 	int Farm::* member = getMemberPtr(animals_to_count);
  34.     count_animals(member);
  35.     return 0;
  36. }
Success #stdin #stdout 0s 5496KB
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https://ideone.com/dogkFH
language:
C++ 4.3.2 (gcc-4.3.2)
created:
3 years ago
visibility:
public

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