This is probably more than you are looking for, but the fftw code ( www.fftw.org ) is a pretty amazingly designed piece of C code that does some very advanced s

This is probably more than you are looking for, but the fftw code ( www.fftw.org ) is a pretty amazingly designed piece of C code that does some very advanced stuff. However, if you trying to get off to a good start, you might want simplistic examples. One thing I think helps you become a better programmer, is to read your own code carefully a long time after you have written it.