Could Ndless possibly still be having problems with global variables?

I made the variables local, now the program actually runs. However, I'm still left with issues where I can't find what I'm doing wrong , like having yvel set to 128, and then y+=yvel; doing absolutely nothing  

Because I have no clue what newlib is, I don't think I'm including it :p

In nRGBlib, how do you make sprites? Or has that not been implemented yet?

Also, as ive posted multiple times , rand() doesnt work because RGBlib has a rand function that conflicts with yagarto's one, so how do I get it to work? The snake game uses rand() and it works fine.... I can't really spot any differences between snake's code and mine that could have made snake's work, other than that it included nMATHS, but that didn't change anything for me when I included it

Edit: Ouch, triple post

Here is my desktop.  The car is a Bugatti Veyron Matte Purple that my parents spotted in downtown London.  They took a photo for me, and I was so mad that I wasn't there to see it.  I'm a car fanatic

Whooaaaa! They are lucky!
I've always wanted to see a Veyron.

I tried that before; it still crashed.

I had rmov go to 128 at first, and used that function.
Then changed rmov to 64 to tweak the effect, and it didn't seem to change yvel again.
Then, I changed it back to 128, which was how it was before when it worked, and IT CRASHES. Then, I changed it back to 64 and not only does it not work like before, it now crashes the calc!
How hard can it possibly be to add two variables together?
And also doing yvel=-yvel still crashes the calc for some reason!
Now, simply having the line lmov=-64 crashes it!
Does the - sign not mean negative in C like in axe?

I give up. I'll try it again tommorow.

Ok, either I'm just too inexperienced with C, or theres something thats screwing up here...

When I add simple lines like:
yvel+=rmov;
and
yvel=-yvel;
my calc crashes when running the program... I have no clue why.

I was able to get yvel+=ymov; to work by making an unnecesary function to do what that line should have done

I just started making programs with nRGBlib and ndless today, so I'm a beginner with it.

I started making Pong as my first mini-project and I now have a few questions.

If anybody can answer some, I'd really appreciate it
(Also i mention drawStr in this, and I'm not really sure if I'm remembering the correct name of that function )

First, how could the addition of this line cause my calc to crash?
yvel+=rmov;
Both of those are defined and have values, but I have no clue why that wouldn't work. Does it depend on the code around it or something?

How can rand() work while using nRGBlib? It gives me errors. After I showed Levak my error (here),he said that there's a conflict between rgblib's rand and yagorto's one. So I guess that means RGBlib has a rand too?

In nRGBlib,  what would you use to display an integer? I only know of drawStr and I don't think that works for it... Also is there perhaps a %d thing like in printf?

For the 4th and 5th arguments of drawStr, what do they do? Size?

And so I can be clear on how to use RGBlib, is there some sort of guide I can use that says all the functions?

The program enters what is referred to as a "big honkin' loop." This loop is where the entire game happens.

Lol, people call it the big honkin' loop?