clearbit

Still learning the basics with classes.

When making an object, im not sure i understand. for example

aWorld could be an object of World, right? Well, in turn this would not be a function call, but it will call the objects constructor? I'm not sure I understand why this would call a constructor, when a simple built-in type(such as int) does not, or does it?

also would this be like initializing an object of the class? Or are built-in types completely different?

EverLearning

Here's what google turned up, which is sort of what you ask: here
although neither g++ nor Visual Studio .NET initialize declared variable (if you print, you aren't going to get a zero).

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DaWei

Everlearning's link appears to have the answer you want. I'll just add this: a class is a blueprint for building something, not the something itself. The blueprints for integers and such are an inbuilt part of the language. That fact does not bring an item into existence -- you still have to declare them.

The purpose of classes is to support object-oriented design. With that, you may make a blueprint and have the resulting "thing", if you ever actually build one, be as useful as any other building block. Your statement,

World aWorld;

told the compiler that you have a blueprint for a World already defined and asks the compiler to build (instantiate, declare) one of those for you.

An object is not a function, it is a thing. A carburetor is a thing; mixing fuel and air to the appropriate level of explosiveness is a function (method) of the carburetor. The carburetor has sub-objects: jets, butterfly valves, things of that ilk. Your object may have sub-objects: other things you have defined, or predefined things such as integers.

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clearbit

Thanks for the link, explination was just what i needed

Brilliantly explained. I like the blueprint description.

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