1 - Intro
  + hello-world.c
  + building
2 - The C Preprocessor
  + comments
  + #include
  + #define
  + #if
    o !, ||, &&
    o #defined
    o #endif
  + #ifdef
  + #ifndef
  + #if 0
  + #pragma
3 - Language Structure
  + types
    o types of integer
      * on various machines
      * and how to get the precision you want
    o types of floating point
    o strings
  + operators
  + flow control
  + function definitions
  + function calls
4 - Arrays
  * arrays
  + pointers
  + arrays vs. pointers
  + c4-intro.c
5 - Images
  + image.c
  + c4-image.c
6 - Image IO
  + io.c
  + c4-image-io.c
7 - Fractal Intro
8 - Complex Numbers
  + complex.c
  + typedef
9 - Fractal Generation
  + fractal.c
  + enums
  + bitfields
  + stdarg
  + c4-fractal.c
10 - Thanks, Questions?