Arduino PreProcessing.

I want to compile Aruino programs on an Android tablet. I need to get the pure C code and then compile it. Can anyone point me out to the exact place in the source code where all the pre-processing is happening ?

Thank You.

Turn on verbose compilation in File/Preferences and see what that reveals.

I need to get the pure C code and then compile it.

First, you misspelled C++.

Second, compiling the code is not sufficient. You must also link it for the appropriate Arduino and upload it to the Arduino. Is your tablet capable of those last two steps?

Compiling ... that implies a target machine architecture. You cant just take any old C++ compiler, it has to be the one that crosscompiles to the AVR chip.