Giygas learns the art of C++

But not wise.

This post has been edited by Bacteriophage on Sep 24 2009, 06:06 PM

No, no, of course not.
Perhaps I am taking this a bit fast, but I understand that I won't be able to learn anything to it's full potiential in a few hours.
I'm probraly going to be doing alot with just the basics, input/output, functions, variables, etc. and make a bunch of programs such as calculators and all of that.
Then after I do that, which will probrably take a few days, i'll start investigating arrays, classes, etc. and see how I can use them.
Then... Well, I guess what comes next I can't really say right now... I don't even know myself. :L

As an actual programmer you'll be creating solutions for problems that aren't already outlined for you. So try to adjust to that environment of thought by making programs that solve problems for you or are good entertainment.

For example, my first program used simple i/o and a functionless expression to work out the quadratic formula for me. Your guess the number game is also a good idea, albeit a bit overdone.

Try not to think of things like arrays and classes as "things to know" but as tools to use.

Take it at your own pace. Some programming languages (C++ included) are taught over the course of months. Just because Retro, et al. can pretend to learn it in a few days doesn't mean you should rush through it.

Otherwise, you risk becoming one of the countless uninformed apologetic teens who prove themselves the ****ing bane of any programming effort, ever.

Thank you for the info, Phage- I guess I was overcomplicating it, or thinking as C++ as a program that you can learn just by reading a few tutorials.
This won't discourage me, though, because C++ is something you really need to know if you are looking to head into the programming career ( as I do, and aparently, with you learning his to work with Valve, you to do :3 ).
Plus, it's fun to do and can help with things outside of the internet, to.

C++ has a very large number of subtleties to it that will creep up and bite you for years to come. I still get bitten on occasion.

RII, question.

Is basic -> functions -> arrays -> pointers -> classes -> inheritance a good order to work through learning the language?

And what's a typedef?

Actually, I would very much like to know if that's a good path to.


Also, I just got finished with a basic calculator that asks you for two numbers, then you type in 1-4 to decide if you want i to add, subtact, multiply or divide them, respectively. 5 Exits it.
Now i'm gonna try to make the interface slightly easier to use. :3

typedef is easy.


after this line:

the following two lines would be equivalent:

after this line:

the following two lines would be equivalent:

ty lif

Okay, so after wondering why my calculator doesn't support decimals, I realised that using float in place of int works. So, is Float just int with decimals? If so, why is int even there if float is better anyways?

int can do a lot of things that float can't. For example, an int number can be used as a counting number and be incremented/decremented as part of a for loop.

int also takes less memory.

floating-point numbers (aka float) are more precise, but take more memory and are more difficult to work with in counting operations. They can also **** up logical operators since processors always have some degree of inaccuracy in floating-point calculations.

also if you're going to use decimal numbers I personally suggest double. There's still inaccuracy but there's less of it.

This post has been edited by Bacteriophage on Sep 24 2009, 07:05 PM

Oh alright, thanks for clearing that up.
I guess in future programs that don't require decimals i'll use int, otherwise, for things like calculators i'll stick to Doubles.

Speaking of calculator's,


This is neat stuff :D

So are you using dedicated functions/expressions for squaring and cubing, or are you using <cmath>

I'm using dedicated functions and expressions currently, like
x*x and (x*x)*x.
I have not heard of <cmath> actually.

http://cplusplus.com/reference/clibrary/cmath/

fun times

int is an Integer, so it allows you to use only Non-decimal numbers. It is typically more accurate than Floating Point numbers when it comes to integers, and uses less memory and CPU time. Integers also have the advantages that Phage listed. Float is a Floating Point Number, so it allows you to use decimal numbers. Float is usually more accurate than int when it comes to floating points, but it uses more CPU and Memory.

Woah.

That would make it... Alot easier to do... Everything, really.
Though I won't add all of that to my calculator, things like Square Root and all of that good stuff could be useful.
If only I could find the proper format...

I was trying to make a C++ tutorial at one point. I should work on it more.

What useful program have you actually made in c++? I'm interested.

This post has been edited by Bacteriophage on Sep 24 2009, 07:21 PM

Oh I see, it shows the format of the commands if you click on the link.
Awesome.