[csl]

Well, as long as the functions are short and the name is descriptive, I always use short names when the meaning is clear. For example strlower, you don't need more than `s` as the parameter name. It will probably be short, so using `len` or even just `l` for the string length should be fine for a ~15 line function.

A tip is to look at the function declaration in the header files. There I, at least, use somewhat longer parameter names for descriptive purposes (along with documentation) but usually use short ones in the function bodies.

So, if your functions are short and to the point (low coupling, high cohesion, in Coding Complete parlance), then I consider short parameter and variable names a good style. But it's just one ingredient in good code.

Unless you're looking at competitive programming, I feel the best programmers make clear code with short names.