Our "hallo world" example is julia1.c
which produces pictures of julia sets. A more sophisticated version
julia2.c allows to use color maps.
A further improvement allowing input is
julia3.c . The simple example
shellscripts as zoom.sh"
produced the movie to the left.
The examples with Makefile can be downloaded as a gziped tar ball . Untar it as 'tar -xzf examples.tgz', go to the directory examples 'cd exmples' and run 'make'.
Good books on C are (status 2000)
Simplicity, Clarity, Generality B.W. Kernighan, R. Pike, in "The Practice of Programming".