程序语言中花括号的风格列举

 K&R style -- Named after Kernighan & Ritchie, because the examples
in K&R are formatted this way. Also called `kernel style' because the
Unix kernel is written in it, and the `One True Brace Style' (abbrev.
1TBS) by its partisans. In C code, the body is typically indented by
eight spaces (or one tab) per level, as shown here. Four spaces are
occasionally seen in C, but in C++ and Java four tends to be the rule
rather than the exception.

if () {  
   
Allman style -- Named for Eric Allman, a Berkeley hacker who wrote a
lot of the BSD utilities in it (it is sometimes called `BSD style').
Resembles normal indent style in Pascal and Algol. It is the only style
other than K&R in widespread use among Java programmers. Basic indent per level shown here is eight spaces, but four (or sometimes three)
spaces are generally preferred by C++ and Java programmers.

if ()
{           

Whitesmiths style -- popularized by the examples that came with
Whitesmiths C, an early commercial C compiler. Basic indent per level
shown here is eight spaces, but four spaces are occasionally seen.

if ()
        {            
   
GNU style -- Used throughout GNU EMACS and the Free Software
Foundation code, and just about nowhere else. Indents are always four
spaces per level, with `{' and `' halfway between the outer and inner
indent levels.

if ()
  {

似乎写C++的程序员喜欢用Allman style,而写java的程序员用K&R个人比较推荐Allman style