Help me, i am totally confused.
I read so much the manual and tutorials, so i am lost.
I would create a little lite-C script that has one object and one camera.
I want to move the object with w-a-s-d, and this is done.
Now i want program the camera movement indepently from the object with up-down-left-right arrows. I am stucked here.
Please give me a help.

It would be helpfull i guess if you mentioned what you want to do with the camera?

Well i made my camera with the basics of cos and sin, i believe theres some other way but here it goes:

With a circle of radius 1 and origin 0,0, Cos(angle) and sin(angle) will give you the (x,y) coordinates to any point of the circunferance of that circle correspondingly (so cos for x and sin for y).
So now for a moving origin and a radius that's not 1 you have, origin(x,y) - ( radius_of_the_circle * cos/sin(angle) )
You also have to add the angle difference to the pan of the camera to keep focus on the target if you want it to.

With that formula you can pan or tilt around the desired target, for zooming in and out you can make the radius a variable and adjust that correspondingly, i believe it is unnecessary to say that you need to do all that within a infinite loop.

Hope that helps and it's not too confusing, i'm not an expert at math by any means aswell but that worked pretty darn well for me, cheers.

I would like simply to move the camera.
When i press the up arrow then the camera moves forward, with down moves backward, with left moves left and with right arrow moves rigth.

You mean independently of a given target or you want it to be focused on the other entity?

Indepently, if it is possible.

So you just want it to move around, if you programed a players movement that should be easy no?
Further more if you want the camera to hit hard surfaces instead of being like a god mode, you can create an entity, program its movement and attach the camera to that entity.

So do you suggest have to use an entity?
Could you give a simple code, how to attach the camera to that, or a link to a simple example?

Vec_set(camera.x, entity.x)

I also suggest you read the workshops, and explore the samples to try and grasp the basics.

thanks