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  1. #include <iostream>
  2.  
  3. bool isTrue()
  4. {
  5.     return false;
  6. }
  7.  
  8. class A
  9. {
  10. public:
  11.     A() 
  12.     {
  13.         std::cout << "A() called" << std::endl; 
  14.     }
  15.  
  16.     A(const A& ref) 
  17.     { 
  18.         std::cout << "A(const A& ref) called" << std::endl; 
  19.     }
  20.  
  21.     A& operator=(const A& ref) 
  22.     { 
  23.         std::cout << "A& operator=(const A& ref)" << std::endl; this->member = ref.member;
  24.     }
  25.  
  26.     A(char* string): member(10)
  27.     {
  28.         std::cout << "A(char* string) called" << std::endl;
  29.     }
  30.  
  31.     A(int value): member(2)
  32.     {
  33.         std::cout << "A(value) called" << std::endl;
  34.     }
  35.  
  36.     ~A() 
  37.     { 
  38.         std::cout <<"destructor called" << std::endl; 
  39.     }
  40.  
  41.     void check() 
  42.     {
  43.     	std::cout <<"called the " << member << " constructor" << std::endl;
  44.     }
  45.  
  46.     int member;
  47. };
  48.  
  49. int main() 
  50. {
  51.     A a = isTrue() ? A("string") : A(10);
  52.     a.check();
  53.  
  54.     return 0;
  55. }
Success #stdin #stdout 0s 3340KB
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stdin
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Standard input is empty
stdout
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A(value) called
called the 2 constructor
destructor called
https://ideone.com/YsjmnK
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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