Giygas learns the art of C++

After using GM for about 5 years, it's time to move onto to something more professional and open...
And alot more complicated :c

I've been working with it for about a day now, and I have some of the basic idea's down currently. I could write a program that asks for your name and returns it to you, or a simple calculator.

Though I understand it just get's harder from here... I'll post updates as I make some simple programs or expand upon older ones, ect.

Some programs I made from scratch ( I do these occassionally to make sure I understand some aspects. It's nice when they actually work, I feel like I accomplished something :3 )

This one just multiplies two numbers you give it.

Anyways, post with idea's to help with my coding, or some suggestions for me to try and make. :3

It's good that you've decided to move onto a more powerful, better controlled language.

It's not too hard to move onto C++ from GML, provided you understand all the advanced GML issues.

Anyway, good luck on your "journey!"

Thanks- hopefully i'll be able to break all the GML habits i've developed in place of the C++ ones.

Also, functions are fun =D

So many possibilities :3

That's technically not a function.

Or maybe C++ is just weird, I don't know. But in most languages, a function returns a value without you having to declare a variable for it.

Just remember; if C can shoot you in the foot, C++ can blow your leg off.

Unless i'm mistaken, C++ functions refer to unset variables and outputs that can be called at any time, in this case, "divide" can be called with the variabes 10 and 5. Since divide is set to know that it should divide a by b, it divides 5 by 10 and outputs the answer on the screen.

I think?

p sure that declaration is redundant anyway

EDIT: nvm i see what he did

that's kind of a weird way to write most functions

generally what you'd do is something like:

#include using namespace std; int divide(int a, int b) { return a/b; } int main () { int u = divide(10,2); cout << u; system("pause"); return 0; }

This post has been edited by Xgoff on Sep 24 2009, 02:00 PM

Oh hey that's alot easier to call up a function that way
;D

Alright, so I wrote my first "game" program from scratch.
It asks you to input a number, you have 10 turns to try and guess the number it's thinking.
It will tell you if the number is higher than what you typed in, or lower.

However, right now, it generates a random number, from 1 to 37,150. That's no good! Does anybody have an idea of how I can set a range of numbers from 1-100?

Here is the current code:

I don't get why people think C++ is hard. It's an extremely easy language (or at least, in my opinion) to learn, however, the sheer simplicity is what makes it difficult to apply to making programs.

With your program, you multiply the answer by x/RAND_MAX, x being the max number. In which case it would be 1 to x.

This post has been edited by RetroXYZ on Sep 24 2009, 02:36 PM

Ah, awesome- that worked.
After messing around, though, a quicker way is to do
(rand() % x)+1
With x being max number, and the +1 making it so it can't be 0.

So the final code is:

3 triesto guess the number between 1 and 10. Yay :3

Using modulo is faster, but it's not quite as random. Of course, C++ random algorithms are hardly random in the first place. :P

Well, right now, i'm just getting a list of programs done before moving on.
Things like Hi-Lo, a simple Slot Machine, and something grid based are the main things i'm focusing on. When I can do these, i'll move on to...
Well... Actually, I don't know what to do after i'm finished with the "DOS" stage as I call it- do I continue practicing? Do I go onto the application stage? The 2D Stage?

you'd do well to stay at the console for now--learn how to deal with arrays, STL vectors and strings, and classes first, before you move on to graphics.

Have not heard of STL vectors yet, but i'm working on Classes right now- I think I have a good knowledge of Arrays currently, and I might need to review on strings before going onto the more advanced stuff.

actually, for the most part, if you understand classes, SFML is extremely easy to use

I've been having a really hard time with classes, though.
I can't really get the concept down... I think all of the variables and functions to define intimidates me.

Alright, so I think I understand classes- I just honestly can't type out a working program using one without some kind of reference, it is very confusing! Other than that, I find I can use almost any of the other console prompts i've dealt with so far. In time, I suppose i'll have to get used to classes. Until then, i'll be writing a few programs to expand upon them a bit, and eventually move onto some more advanced things.

Once you have figured out all of the Console Commands and basics, I would highly recommend getting SFML and using that for Graphics, Windowing, Input, Multithreading(le gasp! It's complicated, but if you can figure it out, you can use it for turning one program into two and taking full use of multi-core Processors), Audio, Networking, etc. It's a great library, and uses OpenGL for High-speed Rendering and Pixel Shaders! Of course, you should finish learning the basics first, and stick with that until you get used to everything.

Grats. I'm doing the same thing.

Though I think you're taking this far too fast. You won't learn arrays, pointers, or classes to the extent that you can use them in just four hours.

Take it slow.

Also, don't be an idiot about it. Don't think that just because you understand how to use classes you're a master of programming. You have a lot of work to do with memory management before you're ready to make anything good.

This post has been edited by Bacteriophage on Sep 24 2009, 06:05 PM