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1) ANS is d
2) ANS is d

If you are working on windows platform then press Alt+F9 to compile...

On linux platform try gcc file_name.c to compile and ./a.out to run program

Other possibility is that the both files may be in different folders, if so put them in same folder..

One thing you can try is first try to write both the java files in single file..
Means copy BeerExpert.java code into BeerSelect.java file n then try to compile and run it.

In C programming # stands for preprocessors..
Means that it get executed first...
This means stdio library get's embeded into your executable..

You can insert windows XP CD and start formatting PC , while doing so you can delete MAC partition...
N about driver's you can get all the drivers with all version on INTEL site... for intel...

First you should try to close program before deleting folder..
Other option is you should login in SAFE MODE.. and then try deleting folder.
You can find the program from task manager and you can...

Don't worry.. I am computer engg. From india.
Learning computer is not big deal. You should start using computer daily and you will get familiar with it. If you have any queries you can post here...