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  1. #include <iostream>
  2. #include <type_traits>
  3. #include <cassert>
  4.  
  5. class Factoral
  6. {
  7.      public://begin public section
  8.             unsigned int get_number() const { return its_number ; }
  9.             void set_number(unsigned int number);//accessor member function
  10.             unsigned int get_value() const { return its_value ; }
  11.             void set_value ();
  12.      private://begin private section
  13.             unsigned int its_number;//member variable
  14.             unsigned int its_value;//member variable
  15. };
  16.  
  17. int main()
  18. {
  19.     std::cout << std::boolalpha
  20.                << std::has_trivial_default_constructor<unsigned int>::value << '\n' // true
  21.                << std::has_trivial_default_constructor<Factoral>::value << '\n' ; // true
  22.  
  23.     Factoral myFactoral{} ; // value initialized
  24.  
  25.     assert( myFactoral.get_number() == 0 && myFactoral.get_value() == 0 ) ;
  26.  
  27.     std::cout << myFactoral.get_number() << '\n' // 0
  28.                << myFactoral.get_value() << '\n' ; // 0
  29. }
  30.  
Success #stdin #stdout 0s 3296KB
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https://ideone.com/t5hSvc
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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