You should make a function private when you don’t need other objects or classes to access the function, when you’ll be invoking it from within the class. Stick to the principle of least privilege, only allow access to variables/functions that are absolutely necessary. Anything that doesn’t fit this criteria should be private.
You can declare all your classes and then define them in any order, like so:
What does your .h file end with? I’m guessing that the end of your class defnition does not have a “;”. The class is being interpreted as the return type of the first function in your cpp file.
If you define a class without any constructor, the compiler will synthesize a constructor for you (and that will be a default constructor — i.e., one that doesn’t require any arguments). If, however, you do define a constructor, (even if it does take one or more arguments) the compiler will not synthesize a constructor for you — at that … Read more