Don't you think it's a bit odd that the example program uses short-circuiting booleans as conditionals and uses the fabled downto operator?[1] The article's not teaching how to program, it's just showing you how to set up THINK C -- the intro suggests that the target audience is programmers ("I can see [...] that you, too, are a programmer.")

[1] https://stackoverflow.com/questions/1642028/what-is-the-oper...