Traps and Tips

◀ Generic Class▶ Function Amazon Even though I have given you an overview of C++ Class' features there are things you need to familiarize yourself with to avoid falling victim to them. Here is a list of tips related to C++ Class that you should be aware of:

• All members of a class—data and methods—are private by default.
• C++ automatically provides the following member functions for a class: a default constructor, a copy constructor, a default destructor, an assignment operator, and an address operator. Therefore, you can use them without defining them.
• If you do not define any constructor, you can use the default constructor in instantiating a class because compiler automatically creates it for you. If, however, you define a constructor with a set of arguments, then the compiler will not create a default constructor for you. You need to define a default constructor explicitly if you want to use it.
• If you want to create an array of objects of a class, the class must have a default constructor.
• A class is almost exactly the same as a struct. You can define constructors, member functions, and so on, inside a struct just like a class. The only difference I can see is that the default context of data members of a class is private and that of a struct is public.

One year is actually 365.242199 days; that’s why we have leap years.◀ Generic Class▶ Function