Confusion

[GooseGooseDuck198]

I am confused with some of the syntax and wondered if you could help me out.

(I am new to this library and programming in c)

Here is my code

[buserror]

cg_rectangle doesn't draw anything. It just adds a rectangle to the 'current path'.
With cg and other APIs, you add primitives to a path, THEN set a color/fill and then 'stroke' (draw the lines) or 'fill' (fill the path).
Look at the examples.