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  1. #include <iostream>
  2. #include <vector>
  3. #include <string>
  4.  
  5. class fruit
  6. {
  7. public:
  8.     std::string apple;
  9.     std::string banana;
  10.     std::string orange;
  11. };
  12.  
  13. class grocery
  14. {
  15. public:
  16.     std::vector<fruit> g_items;
  17.     std::string total_weight;   
  18. };
  19.  
  20. int main()
  21. {
  22. 	std::vector<grocery> shopping; 
  23.  
  24. 	for(int i = 1; i <= 3; ++i)
  25. 	{
  26. 		std::string num = std::to_string(i);
  27. 		grocery g;
  28. 		g.g_items.push_back({"apple"+num, "banana"+num, "orange"+num}); 
  29. 		shopping.push_back(g);
  30. 	}
  31.  
  32. 	auto check_item = [&](std::string (fruit::*f_itm)) -> void
  33. 	{
  34. 	    for (auto &g : shopping)
  35.     	{
  36. 			for(auto &f : g.g_items) {
  37. 	        	std::cout << f.*f_itm << std::endl;
  38. 	        }
  39.     	}
  40.     	std::cout << std::endl;
  41. 	};
  42.  
  43. 	check_item(&fruit::apple);
  44. 	check_item(&fruit::banana);
  45. 	check_item(&fruit::orange);
  46.  
  47. 	return 0;
  48. }
Success #stdin #stdout 0s 5652KB
comments (?)
stdin
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Standard input is empty
stdout
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apple1
apple2
apple3

banana1
banana2
banana3

orange1
orange2
orange3
https://ideone.com/oFtL3E
language:
C++ 4.3.2 (gcc-4.3.2)
created:
4 years ago
visibility:
public

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