How do you use the non-default constructor for a member?

by

You need to call a(int) explicitly in the constructor initializer list:

b() : aInstance(3) {}

Where 3 is the initial value you’d like to use. Though it could be any int. See comments for important notes on order and other caveats.

More Related Contents:

  1. Why is there no call to the constructor? [duplicate]
  2. How do you pass a member function pointer?
  3. no default constructor exists for class
  4. C++ virtual function from constructor [duplicate]
  5. Is passing a C++ object into its own constructor legal?
  6. Error: cannot bind non-const lvalue reference of type ‘int&’ to an rvalue of type ‘int’
  7. Will an ’empty’ constructor or destructor do the same thing as the generated one?
  8. Is a `=default` move constructor equivalent to a member-wise move constructor?
  9. How to add constructors/destructors to an unnamed class?
  10. “No appropriate default constructor available”–Why is the default constructor even called?
  11. Different ways of initializing an object in c++
  12. No matching function for call to Class Constructor
  13. Class inherited from class without default constructor
  14. default visibility of C++ class/struct members
  15. C++ Member Initializer List
  16. Scope resolution operator being used twice
  17. Questions regarding constructors
  18. What is this weird colon-member (” : “) syntax in the constructor?
  19. Unresolved external symbol on static class members
  20. How do you create a static class in C++?
  21. call to pure virtual function from base class constructor
  22. Why should default parameters be added last in C++ functions?
  23. How can I get the class name from a C++ object?
  24. Destructors of builtin types (int, char etc..)
  25. Can class template constructors have a redundant template parameter list in c++20
  26. How can I avoid including class implementation files?
  27. Initializing a union with a non-trivial constructor
  28. Constructor initialization Vs assignment
  29. passing object by reference in C++
  30. Can you start a class name with a numeric digit?

Leave a Comment