differende c and arduino language

Hi,

I'm thinking about using a arduino board for a new project.
Wat I would like to know is if there are restrictions in the arduino code/lib.

I don't want to develop something and come to the conclusion I can't make it with the arduino language and need to use plain C.

Without knowing what it is you want to do, it is difficult to say, but I'd avoid image-processing and large relational databases on the Arduino.
;D
Otherwise, go for it!

its a system that sends temperature and windspeed form on to an other module using a fast ntc to read the temp and a hall sensor to read the windspeed ( i need to make a table for this to convert pulses into m/s).

At the receiver side (wireless with the rfm12b) i want to display it on a 128x64 lcd with ks0108 controller. It needs to display wind and temp current and history (in a graph).

I saw that there are libraries for the rfm12b and ks0108

If you can do it (on a microcontroller of equal size) in C, you can do it with Arduino.

Arduino is (a superset of a subset of) c++

Good luck!