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  1. #include <iostream>
  2. using namespace std;
  3.  
  4.     template<int N>
  5.     struct Member
  6.     {
  7.     	Member(int some_arg) 
  8.     	{
  9.     		std::cout << "Default constructor of Meber " << N << std::endl;
  10.     	}
  11.     };
  12.  
  13.     class A 
  14.     {
  15.     	Member<1> m1;
  16.     	Member<2> m2;
  17.        enum TrackerType { NONE, ONE, TWO };
  18.     public:
  19.        A(TrackerType tracker = NONE)
  20.        try    // A constructor try block.
  21.          : m1((tracker = ONE, 1)) // Can throw std::exception
  22.          , m2((tracker = TWO, 1)) // Can throw std::exception
  23.          {
  24.     		 //TODO:
  25.          }
  26.        catch (std::exception const & e)
  27.          {
  28.             if (tracker == ONE) {
  29.                std::cout << "m1 threw: " << e.what() << std::endl;
  30.             }
  31.             else if (tracker == TWO) {
  32.                std::cout << "m2 threw: " << e.what() << std::endl;
  33.             }
  34.             throw;
  35.          }
  36.     };
  37.  
  38. int main() {
  39. 	A obj;
  40. 	// your code goes here
  41. 	return 0;
  42. }
Success #stdin #stdout 0s 3296KB
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Default constructor of Meber 1
Default constructor of Meber 2
https://ideone.com/kFxheg
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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