Thread: New To C++...

I am a bit new to C++ and I have a few questions...

1)What are the differences between variables, pointers, and references and how do you know which one to use?

2) How do I know which variable type to use:
unsigned short int
short int
unsigned long int
long int
int
unsigned int
float
double

3) when creating an application I use the app wizard but for some reason I don't see the application window. How do I open the application window so I can add controls to is.

4) in the app wizard there is a section to chose the base class, How do I know what the base class I should use for the application.

I have three C++ books but none of these questions seem to be answered in them so if someone could please answer these questions... Thank You

1) variables are holders of information. pointers and references both relate to a variable, can't have (a valid) one without the other). references are essentially pointers with all the dirty work being done behind the curtain. pointers and references come in handy when you want to pass large objects from one function to another. They both allow you to change values of a variable back in some other function, since you can only have one return value per function. pointers allow you to declare items on the free store using dynamic memory.

You learn how to use them all as you start writing your own programs.

2) see the last line to answer 1.

3 and 4) are both compiler specific. Not knowing which compiler, can't help. However, for now can probably forget about base classes. They have to do with inheritance, etc., and that's a ways down the road.

I think such things aren't just explained in books because books teach you the use of the language stuffs but won't tell you when to use it, I think that it is somehow obvious that we use what suits us the most in the present case... Because as you will see, there are many cases where you can use different features of the language to solve the problem, it will depends on either your coding style or your specific needs.
Besides, trying to start learning pointers when not being able to understand well native primary types is no good. If you want, you can learn about references without trying to understand how it "really" work.
Also, you shouldn't be using the wizard, forget about it for now.