Do you have to have a default constructor?

Question

Say I have a class. I want it to have a constructor that takes certain arguments, so I make one. Do I still need to have a constructor that has no arguments (default constructor) even if I don't need it? In other words, do i have to include Class() as a member function even if I don't need it?

Answer 1

No, if you don't need it then you don't need it.

You only need it if you want to be able to default-initialise the class. Often you don't want that - you only want objects to exist if they were correctly initialised with the constructor(s) you wrote - which is why declaring your own constructor removes the implicit default constructor.

Answer 2

No. Make a class that does what you need, not one that adheres to cargo cults for no reason. Rubber duck the class if in doubt.