It's idiomatic style in the K community, e.g. here's a random source file from kdb itself - http://code.kx.com/wsvn/code/kx/kdb%2B/c/c/odbc.c
Some members of that community prefer this style because they find it more readable.
Some members of that community prefer this style because they find it more readable.
As a side project I implemented a small text editor in this style. I had a working text editor with the ability to load a file, insert and delete text, scroll around a large file, and save changes. It fit within about 100 lines of concise (but I wouldn't say obfuscated) C.
In the end I decided to reformat it and use my usual style before implementing more features. But it was a good experiment and I now understand the appeal of the ultra-condensed style you see in J, K, some Forth, and some Perl code.